Tesla BMS Alert Codes

Tesla alert code in the Battery Management System (BMS) module related to pack config mismatch.

Tesla alert code in the Battery Management System (BMS) module. The Gateway packPerformanceDeviation config does not match the configured pack type GTW_packPerformanceDeviation is not compatible with the configured pack type GTW_packPerformanceDeviation is compatible with the configured pack type A CAC update resulted in a large change above the alert threshold and was saturated The BMS uses this for indicating that a task is close to using all its stack

Tesla alert code in the Battery Management System (BMS) module. BMS was unable to read a pack birth date from the calibration block or derive one from the pack serial number BMS detects that both of the FC Link contactors is welded

Tesla alert code in the Battery Management System (BMS) module. The pack hot seal test has not completed in the lifetime of this vehicle Sets when the vehicle turns on by default, if there is no history of having completed this test in the past Run coolant through the battery loop above the warm coolant threshold for the specified time period This test should complete as a source of tracability for the pump system as a mitigation for a hardware issue

Tesla alert code in the Battery Management System (BMS) module. Charge rate is limited until cell temperatures increase

Tesla alert code in the Battery Management System (BMS) module. The module IDs do not match the pack type set by the config block Any module has all devices reporting invalid module IDs with correct CRCs, or any module has all devices reporting incorrect module ID CRCs (corrupt module ID data) All modules have at least one device reporting a valid module ID with a correct CRC May indicate an incompatible module has been installed for the pack type, which could lead to range loss due to CAC and SOC imbalance. If all modules are reported with invalid module IDs, this may indicate that the wrong config block has been written for the given pack hardware

Tesla alert code in the Battery Management System (BMS) module related to sw brick ov.

Tesla alert code in the Battery Management System (BMS) module related to sw brick uv.

Tesla alert code in the Battery Management System (BMS) module related to sw module ot.

Tesla alert code in the Battery Management System (BMS) module related to sw brick instability.

Tesla alert code in the Battery Management System (BMS) module. HV battery drive limits have been exceeded by the system

Tesla alert code in the Battery Management System (BMS) module related to sw over current.

Tesla alert code in the Battery Management System (BMS) module related to sw stack ov.

Tesla alert code in the Battery Management System (BMS) module related to sw islanded brick.

Tesla alert code in the Battery Management System (BMS) module. Indicates power balance anomaly between HV loads. BMS cannot measure one or more stack voltages

Tesla alert code in the Battery Management System (BMS) module related to sw hf current anomaly.

Tesla alert code in the Battery Management System (BMS) module related to d soc limiting.

Tesla alert code in the Battery Management System (BMS) module. High impedance was detected on one or more bricks BMS detects that at least one HVC voltage reference was out of bounds BMS has detected an HVIL fault with contactors closed.

Tesla alert code in the Battery Management System (BMS) module related to sw passive isolation.

Tesla alert code in the Battery Management System (BMS) module related to sw isolation.

Tesla alert code in the Battery Management System (BMS) module related to sw hvp hvil fault.

Tesla alert code in the Battery Management System (BMS) module related to sw flood port open.

Tesla alert code in the Battery Management System (BMS) module. BMS has detected that the DC Link voltage is too high

Tesla alert code in the Battery Management System (BMS) module. The BMS uses this to indicate the SWT peripheral triggered a watchdog expiration Alert indicating HVP Error/EOUT pin asserted A brick has exceeded the maximum brick voltage BMS detects that the HV battery cannot support sufficient power for driving BMS has detected a memory error

Tesla alert code in the Battery Management System (BMS) module. The BMS uses this to indicate a destructive reset was previously taken, and provides additional data on the cause as indicated by the processor BMS detects that one of the FC Link contactors is welded

Tesla alert code in the Battery Management System (BMS) module related to sw mpu error.

Tesla alert code in the Battery Management System (BMS) module related to sw watch dog reset.

Tesla alert code in the Battery Management System (BMS) module related to sw assertion.

Tesla alert code in the Battery Management System (BMS) module related to sw exception.

Tesla alert code in the Battery Management System (BMS) module related to sw task stack usage.

Tesla alert code in the Battery Management System (BMS) module. The BMS uses this for indicating that a task was detected as overflowing its stack BMS forced contactors open due to one or more alerts

Tesla alert code in the Battery Management System (BMS) module. None; clears on BMS reset

Tesla alert code in the Battery Management System (BMS) module related to sw brick voltage mia.

Tesla alert code in the Battery Management System (BMS) module related to sw hvc vref bad.

Tesla alert code in the Battery Management System (BMS) module related to sw pcs mia.

Tesla alert code in the Battery Management System (BMS) module related to sw ver supply fault.

Tesla alert code in the Battery Management System (BMS) module. Alert for indicating that the HV chain model has faulted and leaky bucket is being used. A bleed FET on Batman has failed.

Tesla alert code in the Battery Management System (BMS) module. The BMS detects the VER supply voltage is below the allowed threshold

Tesla alert code in the Battery Management System (BMS) module. A temperature estimate from the Bandolier Thermal Model is beginning to diverge from the corresponding thermistor measurement. Early warning alert before the model is reset. A communication issue with the BMB daisy chain is detected No communication issues with the BMB daisy chain have been detected May indicate a loss of BMB sensor data

Tesla alert code in the Battery Management System (BMS) module. The Bandolier Thermal Model was reset (re-initialized from thermistor measurments), either due to invalid input data, wake from sleep, or sanity check failure (a model temperature estimate diverged too far from the thermistor measurement).

Tesla alert code in the Battery Management System (BMS) module. The BMS detects a mismatch between the pack voltage and the sum of brick voltages

Tesla alert code in the Battery Management System (BMS) module. The BMS detects that there is a leakage path on the FC link Alert for indicating an attempt to reset the ECU is blocked by contactors. BMS has detected that one or both flood ports are opened

Tesla alert code in the Battery Management System (BMS) module related to sw brick v change.

Tesla alert code in the Battery Management System (BMS) module related to sw brick v imbalance.

Tesla alert code in the Battery Management System (BMS) module related to sw charge port fault.

Tesla alert code in the Battery Management System (BMS) module related to sw soc imbalance.

Tesla alert code in the Battery Management System (BMS) module related to sw cac imbalance.

Tesla alert code in the Battery Management System (BMS) module related to sw low power.

Tesla alert code in the Battery Management System (BMS) module. BMS cannot transition into the requested state because of some blocking condition

Tesla alert code in the Battery Management System (BMS) module. BMS could not disable charge session properly

Tesla alert code in the Battery Management System (BMS) module. BMS was losing power while attempting to charge An SocByOcv correction of >3% occurred during the previous rest

Tesla alert code in the Battery Management System (BMS) module. Charger exceeds BMS limits for voltage and/or current

Tesla alert code in the Battery Management System (BMS) module. Estimated contactor impedance exceeds BMS limits

Tesla alert code in the Battery Management System (BMS) module related to sw ctr close blocked.

Tesla alert code in the Battery Management System (BMS) module related to sw ctr force open.

Tesla alert code in the Battery Management System (BMS) module related to sw ctr close failure.

Tesla alert code in the Battery Management System (BMS) module. Diagnostic alert for sleep and wake transitions BMS has detected that CP fault asserted BMS was unable to close contactors

Tesla alert code in the Battery Management System (BMS) module. BMS detects a mismatch between actual and commanded pack contactor set state HVP comms are ok AND pack contactors were closed AND pack contactors are now open/opening AND BMS_packContactorRequest has remained closed

Tesla alert code in the Battery Management System (BMS) module. BMS detects a mismatch between actual and commanded FC contactor set state HVP comms are ok AND fast charge contactors were closed AND fast charge contactors are now open/opening AND BMS_fcContactorRequest has remained closed

Tesla alert code in the Battery Management System (BMS) module related to sw feim test blocked.

Tesla alert code in the Battery Management System (BMS) module. BMS sees the VCFRONT is missing while in DRIVE BMS cannot measure any temperatures one or more of the modules

Tesla alert code in the Battery Management System (BMS) module related to sw vc front mia.

Tesla alert code in the Battery Management System (BMS) module. BMS sees the Gateway MIA

Tesla alert code in the Battery Management System (BMS) module related to sw charge port mia.

Tesla alert code in the Battery Management System (BMS) module. No CP messages messages are present

Tesla alert code in the Battery Management System (BMS) module. BMS sees the Drive Inverter MIA BMS detects that both of the DC Link (pack) switches is welded BMS cannot communicate with the PCS High voltage isolation is too low for the vehicle to operate The conditions for detecting a potential propagating thermal event were observed.

Tesla alert code in the Battery Management System (BMS) module. BMS sees the UI MIA

Tesla alert code in the Battery Management System (BMS) module. BMS data integrity loss due to BMB chain double break A prolonged communication issue with the BMB daisy chain that is known to cause a loss of BMB sensor data is detected No BMB sensor data loss conditions are detected for a prolonged period of time The BMS is likely performing BMB sensor data substitution to replace data missing due to the communication issue BMS contactor closure is blocked by one or more alerts BMS has an error transmitting on VEH, HVS or HVI CAN bus

Tesla alert code in the Battery Management System (BMS) module. BMS cannot talk to all BMBs 6.0.996.0.77 6.0.76.0.25

Tesla alert code in the Battery Management System (BMS) module related to sw one module tsense.

Tesla alert code in the Battery Management System (BMS) module related to sw all module tsense.

Tesla alert code in the Battery Management System (BMS) module related to sw stack voltage mia.

Tesla alert code in the Battery Management System (BMS) module related to sw bmb device ot.

Tesla alert code in the Battery Management System (BMS) module. A BMB device has a MUTE status that does not align with the MUTE/UNMUTE command sent by the BMS MUTE is disabled for any device while balancing, or otherwise enabled for any device MUTE is enabled for all devices while balancing, or otherwise disabled for all devices Bleeding bricks that do not MUTE during balancing can impact SOC estimation

Tesla alert code in the Battery Management System (BMS) module. A given brick has an alpha signal below the alert Alpha threshold. BMS has started a timer and will open contactors once it expires BMS received a request from the HVP to initiate a Graceful Power Off Set when brickV difference is greater than the brickV imbalance threshold Stack dump values from BMS corresponding to the watchdog event

Tesla alert code in the Battery Management System (BMS) module. Brick balancing is required before checking dSoc for alpha estimation SOC imbalance exceeds the max threshold for enabling alpha estimation SOC imbalance drops below the threshold for enabling alpha estimation Alpha estimation is disabled until imbalance is resolved

Tesla alert code in the Battery Management System (BMS) module. Indicate that NVRAM data was not initialized because of a config error Indicate that a graceful power off has been activated by the BMS BMS has reduced power for driving due to a fault Indicate that an FEIM test is required but currently blocked by another fault

Tesla alert code in the Battery Management System (BMS) module. Indicate that a thermistor reading is irrational BMS cannot measure the temperature on any modules BMS has faulted while charging or attempting to charge due to a fault BMS does not receive the UI charge request message BMS receives the UI charge request message BMS does not receive charging-related requests from the UI Indicates a BMB reference voltage was out of bounds BMS has detected that one or more bricks' voltage is above the warning threshold Wall connector contactor output shows no voltage when expected to be closed on one or more phases No voltage is seen on Wall Connector output when contactors are expected to be closed Voltage is seen at the wall connector output or contactors switch to open state Wall connector will not operate Wall connector charge handle temperature too high info from manualCC_A013 Wall connector charge handle temperature exceeds 78 C Wall connector charge handle temperature falls below 58 C or user interaction if charging was stopped Wall connector will reduce reported current capability in 25 percent increments until condition clears or current reaches zero and charging is stopped Master unit current limit set too low info from manualCC_A024 Master unit current limit divided by number of units in the sharing network is less than 6 A Master unit current limit set high enough to allow 6 A or greater per unit in the network Input wiring terminals are too hot as detected by non-contact IR sensor info from manualCC_A041 Input wiring terminal IR emission exceeds threshold Input wiring terminal IR emission falls below threshold Charging rate will be reduced by 50% and one red blink on LEDs Wall connector PCBA temperature too high info from manualCC_A011 Wall connector PCBA temperature exceeds 100 C Wall connector PCBA temperature falls below 80 C or user interaction if charging was stopped Wall connector input wiring connections are incorrect info from manualCC_A009 Wall connector line and neutral conductors are swapped Wall connector input wiring is corrected Wall connector will not operate while input wiring is swapped Wall connector microcontroller internal self test fault info from manualCC_A014 Wall connector microcontroller failed internal self test Wall connector microcontroller passes internal self test Wall connector will not operate until self test passes AC line PLL failed to lock. Check grid frequency and quality. PLL was unable to identify valid grid frequency and phase AC line PLL successfully locks GFCI cannot function without locked PLL, Wall Connector will not operate Wall connector input terminal temperature sensor shorted, open, or too cold info from manualCC_A026 Input terminal temperature sensor measured as open or short circuit Wall connector input terminal temperature reading passes rationality check Vehicle side protective earth is disconnected from wall connector info from manualCC_A002 Vehicle side protective earth is disconnected or high impedance Vehicle side protective earth is connected Wall connector will not allow charging until vehicle side protective earth is connected More than three units configured as slaves were detected on the sharing network info from manualCC_A023 More than three units are configured as slaves in the sharing network Three or fewer slave units are detected on the sharing network info from manualCC_A028 Wall connector current limit selection dial is set to an invalid position Rotary dial changed to valid setting and unit is power cycled Microcontroller supply rail is incorrect info from manualCC_A020 Microcontroller supply voltage is outside of valid range Microcontroller supply voltage enters valid range Wall Connector WiFi module hasn't checked in with the real-time processor WiFi module has failed to check in due to a long running process, update, or software bug WiFi module checks in with the real-time processor Charging will continue normally, but connectivity and billing may be delayed or unavailable Wall connector charge handle temperature sensor shorted, open, or too cold info from manualCC_A027 Charge handle temperature sensor measured as open or short circuit Wall connector charge handle temperature reading passes rationality check AC RMS input voltage is too low info from manualCC_A008 AC RMS input voltage fell below 160 V RMS for more than 2 seconds AC RMS input voltage rises above 170 V RMS for more than 2 seconds Wall connector will not allow charging while the input voltage is too low Ground fault detection circuit self test failed info from manualCC_A004 Ground fault detection circuit self test passed after being re-run. Test re-runs after 15 minutes (non-EU), cable cycle, or reset button. Wall connector will not allow charging until the ground fault circuit self test passes info from manualCC_A029 Pilot level transitions to invalid voltage level Wall connector will not operate while pilot level is invalid Wall connector PCBA temperature sensor shorted, open, or too cold info from manualCC_A025 PCBA temperature sensor measured as open or short circuit Wall connector PCBA temperature reading passes rationality check info from manualCC_A015 Neutral conductor is grounded on vehicle side info from manualCC_A005 Neutral conductor conductor impedance to ground on vehicle side is less than 2 Ohms with contactors open Neutral conductor impedance to ground on vehicle is greater than 2 Ohms with contactors open Wall connector will not allow charging if there is a short between neutral and protective earth when a vehicle is connected before closing contactors Wall connector proximity line disconnected or vehicle is not providing proximity voltage info from manualCC_A019 Proximity line in charge cable has no voltage present but a vehicle is connected Proximity line in charge cable rises to a valid voltage level Wall connector will not allow charging while the proximity line is broken because it cannot determine if the cable is latched Wall connector charge handle is too hot Wall Connector handle temperature exceeds 65C Wall connector handle temperature falls below 60C Ground fault current exceeded threshold info from manualCC_A003 Ground fault current has been corrected and the test re-run. Test re-runs after 15 minutes (non-EU), cable cycle, or reset button. Wall connector will not allow charging until ground fault current path is corrected and the test re-run. info from manualCC_A018 Master and slave units in sharing network have different nameplate current ratings info from manualCC_A030 Wall connector nameplate current rating differs from other wall connector in sharing network Wall connector no longer detects units with different nameplate current rating in the sharing network and the unit is power cycled Wall connector protective earth is disconnected or grounding scheme DIP switch set incorrectly info from manualCC_A001 Wall connector AC input side ground impedance is above threshold Wall connector AC input side ground impedance has fallen below threshold for adequate time Wall connector will not allow charging until the protective earth connection is corrected Output voltage, current, and energy monitoring failure Metering hardware fails to initialize Metering hardware initializes successfully Wall Connector cannot detect welds, over-current, or meter energy. Wall Connector will not operate.

Tesla alert code in the Battery Management System (BMS) module. BMS measurement of internal isolation (within the HV battery) is too low A voltage sense harness on Batman has failed

Tesla alert code in the Battery Management System (BMS) module. A thermistor internal sense on Batman has failed

Tesla alert code in the Battery Management System (BMS) module. Shunt Reported as SNA by HVP 6.0.1276.0.76

Tesla alert code in the Battery Management System (BMS) module. Shunt reported as MIA by HVP 6.0.1286.0.55

Tesla alert code in the Battery Management System (BMS) module related to sw vsh failure.

Tesla alert code in the Battery Management System (BMS) module related to io can error.

Tesla alert code in the Battery Management System (BMS) module related to bleed fet failure.

Tesla alert code in the Battery Management System (BMS) module. BMS sees invalid data in the OTP (one-time programmable) memory of a Batman Indicates unusual high frequency component in pack current.

Tesla alert code in the Battery Management System (BMS) module related to io can bus off.

Tesla alert code in the Battery Management System (BMS) module related to sw delayed ctr off.

Tesla alert code in the Battery Management System (BMS) module. BMS detected a pattern test failure on a BMB The BMS runs the BMB pattern diagnostics and detects a deviation from the expected results for any device in the chain The BMS runs the BMB pattern diagnostics and receives the expected results for all devices in the chain May indicate a potential BMB hardware failure which could manifest in more severe alerts from faulty BMB readings CAC difference of bricks within a module exceeds threshold Indicates that a brick's voltage slope is significantly less than the average. A brick has fallen below the minimum brick voltage BMS has detected that one or more BMB devices exceed the over temperature threshold

Tesla alert code in the Battery Management System (BMS) module related to sw module ot warning.

Tesla alert code in the Battery Management System (BMS) module related to sw brick uv warning.

Tesla alert code in the Battery Management System (BMS) module related to sw brick ov warning.

Tesla alert code in the Battery Management System (BMS) module. BMS has detected a mismatch between the pack voltage and DC Link voltage while contactors are closed BMS has detected that the HVP configuration doesn't match

Tesla alert code in the Battery Management System (BMS) module. BMS has detected a correctable BMB OTP error

Tesla alert code in the Battery Management System (BMS) module. HV isolation is approaching a level too low for the vehicle to operate HV isolation is low, but above the sufficient level for vehicle operation Increase isolation resistance between HV system and vehicle chassis May indicate coolant leakage. Brick instability may be observed (a020) BMS does not have valid data for one or more brick voltages

Tesla alert code in the Battery Management System (BMS) module related to sw cac change.

Tesla alert code in the Battery Management System (BMS) module related to hvp config mismatch.

Tesla alert code in the Battery Management System (BMS) module related to sw soc change.

Tesla alert code in the Battery Management System (BMS) module. One or more bricks in the HV battery are at too low of a voltage to permit charging BMS detected and recovered from bus off on VEH, HVS or HVI CAN bus The BMS uses this for generic assertions about unexpected conditions An Soc by Ah saturation of >3% occurred while SOC saturation was active All bricks have <1% SOC by Ah saturation BMS is likely overestimating SOC of some bricks due to incorrect CAC or Coulomb counting BMS has detected that one or more bricks' voltage is below the warning threshold

Tesla alert code in the Battery Management System (BMS) module related to sw soc high ah error.

Tesla alert code in the Battery Management System (BMS) module. Incorrect or Missing configuration block programmed The BMS config block may be missing, incorrect, or unsupported Program the supported config block for the given pack configuration The BMS is unable to initialize configuration parameters Internal condition to HV battery requiring limiting max allowed brick voltage

Tesla alert code in the Battery Management System (BMS) module. Incorrect or Missing part number programmed The BMS part number may be missing, incorrect, or unsupported Program the supported part number for the given PCBA variant The BMS is unable to initialize parameters related to PCBA configuration A module is above the maximum permitted temperature The Gateway packEnergy config does not match the pack type GTW_packEnergy is not compatible with the configured pack type GTW_packEnergy is compatible with the configured pack type May indicate an incorrect config block, or that the installed pack is incompatible with the car config

Tesla alert code in the Battery Management System (BMS) module. BMS has detected that HV isolation is too low while contactors are closed

Tesla alert code in the Battery Management System (BMS) module. Indicates a potential weak short impedance was too low in at least one brick BMS sees the charge port MIA -- some messages are MIA

Tesla alert code in the Battery Management System (BMS) module related to sw bmb vref bad.

Tesla alert code in the Battery Management System (BMS) module. A new histogram missed an update or the max updates missed by a histogram increased above the previous max limit HV battery current exceeded the maximum limit

Tesla alert code in the Battery Management System (BMS) module. HVP MIA on HVI bus 6.0.1586.0.157

Tesla alert code in the Battery Management System (BMS) module related to sw hvp ecu error.

Tesla alert code in the Battery Management System (BMS) module. Attempts at clearing the FC contactor weld via contactor cleaning have failed The voltage of one or more of the stacks in the HV battery is too high

Tesla alert code in the Battery Management System (BMS) module related to sw bmb vref warning.

Tesla alert code in the Battery Management System (BMS) module. BMS does not have enough power to provide 12V support BMS detects one DC and one FC contactor is welded

Tesla alert code in the Battery Management System (BMS) module. BMS detects a mismatch between actual and commanded contactor state.

Tesla alert code in the Battery Management System (BMS) module. Alert that pyro is being blown for an uncontrolled regen event

Tesla alert code in the Battery Management System (BMS) module related to sw pack partial weld.

Tesla alert code in the Battery Management System (BMS) module related to sw pack full weld.

Tesla alert code in the Battery Management System (BMS) module related to sw fc partial weld.

Tesla alert code in the Battery Management System (BMS) module related to sw fc full weld.

Tesla alert code in the Battery Management System (BMS) module related to sw fc pack weld.

Tesla alert code in the Battery Management System (BMS) module related to sw limp mode.

Tesla alert code in the Battery Management System (BMS) module. BMS has detected a mismatch between a stack voltage and the sum of its brick voltages

Tesla alert code in the Battery Management System (BMS) module related to sw charge failure.

Tesla alert code in the Battery Management System (BMS) module related to sw graceful power off.

Tesla alert code in the Battery Management System (BMS) module. Alert that pyro is being blown for an uncontrolled regen event in track mode A brick has shown 2nd order instability noise BMS detects that one of the DC Link (pack) switches is welded

Tesla alert code in the Battery Management System (BMS) module related to hvp gpo request active.

Tesla alert code in the Battery Management System (BMS) module related to sw ecu reset blocked.

Tesla diagnostic code in the Battery Management System (BMS) module related to internal batt failure.

Tesla diagnostic code in the Battery Management System (BMS) module related to internal iso failure.

Tesla diagnostic code in the Battery Management System (BMS) module related to feim failure.

Tesla diagnostic code in the Battery Management System (BMS) module related to system iso failure.

Tesla diagnostic code in the Battery Management System (BMS) module related to pos ctr stuck closed.

Tesla diagnostic code in the Battery Management System (BMS) module related to neg ctr stuck closed.

Tesla diagnostic code in the Battery Management System (BMS) module related to hvil fault.

Tesla diagnostic code in the Battery Management System (BMS) module related to hv discharge fault.

Tesla diagnostic code in the Battery Management System (BMS) module related to over temperature.

Tesla diagnostic code in the Battery Management System (BMS) module related to precharge too short.

Tesla diagnostic code in the Battery Management System (BMS) module related to precharge too long.

Tesla diagnostic code in the Battery Management System (BMS) module related to 12v undervoltage.

Tesla diagnostic code in the Battery Management System (BMS) module related to 12v overvoltage.

Tesla diagnostic code in the Battery Management System (BMS) module related to replace desiccant.

Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that the shunt has experienced an over current (HWOC) event. Be aware that with HWOC alerts there is a possibility that the contactors are welded without a BMS alert. This is because the HV Fuse blows before the BMS can make a calculation.

Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that there has been an over voltage event on the battery hardware.

Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that one or more of the battery modules has reported an alert. If this alert is present, it may also be falsely set at extremely low 12V battery voltages.

Tesla fault code in the Battery Management System (BMS) module related to hw ctr sfty override.

Tesla fault code in the Battery Management System (BMS) module. There is a problem with the Battery Monitor Board (BMB) module alarm.

Tesla fault code in the Battery Management System (BMS) module. There is a problem with the High Voltage Interlock Loop (HVIL).

Tesla fault code in the Battery Management System (BMS) module. There is an issue with the positive contactor drive circuit.

Tesla fault code in the Battery Management System (BMS) module. There is an issue with the negative contactor drive circuit.

Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that there are system faults and has prevented the high voltage (HV) contactors from closing.

Tesla fault code in the Battery Management System (BMS) module. There is a high pack level temperature difference. If this alert is preset, there may be a no flow condition and the thermistors may be thermally disconnected from a cell.

Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that a high voltage (HV) battery cell has experienced an over voltage event.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected a brick that reported a voltage below the minimum acceptable cell voltage value. If this alert is present, the contactor will open to protect the brick.

Tesla fault code in the Battery Management System (BMS) module. A Battery Management Board (BMB) has detected an over temperature condition in a battery module.

Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that the battery monitor board (BMB) printed circuit board (PCB) on the high voltage (HV) battery has experienced an over temperature event.

Tesla fault code in the Battery Management System (BMS) module. To protect the pack and bricks from overvoltage, undervoltage, and overcurrent conditions, this alert is caused by the following:Regen current is too high.Discharge current is too high.Pack voltage is too high.Pack voltage is too low.Brick voltage is too high.Brick voltage is too low.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the high voltage (HV) battery has experienced an over current event.

Tesla fault code in the Battery Management System (BMS) module. This warning is set as the counter for the number of Hardware Overcurrents recorded by the Battery Management System (BMS).

Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that the contactors opened while current was flowing. If this alert is present and the contactors opened under load, the contactors may be damaged.

Tesla fault code in the Battery Management System (BMS) module. The current sensor is having a hard reset. This alert will likely clear once the hard reset is completed.

Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that the charge port door is open or the fast charge (FC) contactors are welded. If this alert is present, the high voltage (HV) contactors will be prevented from closing. This means the HV system will not be exposed to the current if the FC contactors are welded or the charge port door is open.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the high voltage (HV) battery precharge is over the maximum operating temperature.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) will trigger this alert when it senses a loss of contactor power while the contactors are closed. The BMS assumes that it could be because the pyro fuse on the contactor power supply signal blew during a crash. This may trigger while a vehicle is in Service and the contactor power supply loop has been pulled.

Tesla fault code in the Battery Management System (BMS) module. There is a high voltage (HV) battery isolation sensor error detected.

Tesla fault code in the Battery Management System (BMS) module. There is an external or internal isolation alert while the contactors are closed. The isolation resistance exceeds the threshold when the contactors are closed.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an issue with the High Voltage Interlock Loop (HVIL).

Tesla fault code in the Battery Management System (BMS) module. During the first two seconds of the contactors attempting to close, an issue with the positive contactor was detected. If this alert is present, the contactors may be heard attempting to close but remain open as the issue is detected. The speed of the attempt to close and the re-opening may be too quick to distinguish between the two clicks.

Tesla fault code in the Battery Management System (BMS) module. During the first two seconds of the contactors attempting to close, an issue with the negative contactor was detected. If this alert is present, the contactors may be heard attempting to close but remain open as the issue is detected. The speed of the attempt to close and the re-opening may be too quick to distinguish between the two clicks.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there has been an over voltage event that is external to the high voltage (HV) battery.

Tesla fault code in the Battery Management System (BMS) module. The battery pack is over heating.

Tesla fault code in the Battery Management System (BMS) module. This alert indicates there is a certain amount of liquid near or on a sensor. No further action is required. This alert is not relevant and can be safely ignored on Model S / X vehicles because they do not have the liquid sensor.

Tesla fault code in the Battery Management System (BMS) module. The humidity is over the safe threshold in pack. This could indicate a problem with the sealing of the battery pack.

Tesla fault code in the Battery Management System (BMS) module. This alert is expected any time the module has been reset. If the module was deliberately reset and this alert is present, no further action is required. If the module was not reset deliberately, pursue possible causes to investigate further.

Tesla fault code in the Battery Management System (BMS) module related to sw assertion.

Tesla fault code in the Battery Management System (BMS) module. There is a poor or lack of communication with the external systems using the Controller Area Network (CAN).

Tesla fault code in the Battery Management System (BMS) module. There is a poor or lack of communication with the external systems using the Controller Area Network (CAN).

Tesla fault code in the Battery Management System (BMS) module. There is a high voltage (HV) battery management system (BMS) error detected.

Tesla fault code in the Battery Management System (BMS) module related to sw scc.

Tesla fault code in the Battery Management System (BMS) module. The temperature and/or humidity in the Battery Management System (BMS) has exceeded safe levels.

Tesla fault code in the Battery Management System (BMS) module. There is a communication problem between the Battery Management System (BMS) and the Battery Monitoring Boards (BMBs). One or more of the voltage or temperature sensor readings are missing.

Tesla fault code in the Battery Management System (BMS) module. This fault indicates there is a high voltage (HV) battery internal current sensor communication problem.

Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that communication with the charger is missing (MIA).

Tesla fault code in the Battery Management System (BMS) module related to sw evcm mia.

Tesla fault code in the Battery Management System (BMS) module. There is a high voltage (HV) battery internal current sensor error.

Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected an issue with the pump.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected an issue with the thermal system chiller.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected an issue with the heating performance of the thermal controller (THC). If this alert is present, in many cases, it can be ignored.

Tesla fault code in the Battery Management System (BMS) module. A high voltage (HV) battery voltage sensing error is detected.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an issue with the power supply to the Battery Monitor Board (BMB).

Tesla fault code in the Battery Management System (BMS) module. There is a Battery Management System (BMS) power supply problem. THe BMS system is operating at an out-of-bounds supply voltage.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is a power supply issue with the contactor.

Tesla fault code in the Battery Management System (BMS) module. The precharge process has aborted, and the pack contactors were unable to close.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is a brick voltage imbalance in the high voltage (HV) battery pack. If this alert is present, maxBrickV - minBrickV may have grown faster than 25 mV while not driving or maxBrickV - minBrickV may have been > 0.5 V for more than 3 hours while the contactors were open. This alert was formerly named BMS_w064_SW_SOC_Imbalance in firmware versions prior to 17.20.26. If BMS_w064_SW_SOC_Imbalance appears on the vehicle or in the logs, update the vehicle firmware to the current version.

Tesla fault code in the Battery Management System (BMS) module. The brick capacity is below 50% of the normal capacity.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is a high brick resistance. If this alert is present, there may have been a bad module installed into the vehicle upon replacement. There may be lost cell connections and/or uneven cell impedance aging.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has limited the power output to the high voltage (HV) battery due to a lack of coolant flow through the battery to thermally protect the cells.

Tesla fault code in the Battery Management System (BMS) module. The high voltage (HV) battery has a low state of charge (SOC).

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the high voltage (HV) battery pack has low power due to overdischarging.

Tesla fault code in the Battery Management System (BMS) module. This alert indicates a very sudden loss of isolation during a drive. This can point to a "flood" event, which requires opening the contactors immediately even if the vehicle is in drive.

Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that there is an issue with another system and has prevented the high voltage (HV) battery from being requested. If this alert is present, the BMS state may not have matched the requested BMS state for a timeout period specific to both the present and requested state. The timeout period is initialized according to the present and requested state each time the requested state changes.

Tesla fault code in the Battery Management System (BMS) module related to sw unexpctd ctr bhvr.

Tesla fault code in the Battery Management System (BMS) module. The high voltage (HV) battery detected an unexpected HV bus behavior. Often, this fault will trigger when the HV battery does a precharge dynamic weld check. Prior to closing the contactors, the Battery Management System (BMS) checks for any stuck or welded contactors. The BMS moves the pack plus and pack minus, after which the BMS compares movement of both packs. The BMS expects no movement from the Direct Current (DC) link plus and DC link minus.

Tesla fault code in the Battery Management System (BMS) module. This alert is set by the Battery Management System (BMS) when charging does not proceed as expected. There may be a problem with the power source or the charger.

Tesla fault code in the Battery Management System (BMS) module. Thermal Controller (THC) diagnoses the heater temperature sensor.

Tesla fault code in the Battery Management System (BMS) module related to sw manifold temp sensor.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has stopped charging due to the maxBrickV in the high voltage (HV) battery reaching the maxBrickVTarget value.

Tesla fault code in the Battery Management System (BMS) module related to sw heater over temp.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the power supply to the contactors was interrupted.

Tesla fault code in the Battery Management System (BMS) module. A disconnect in the high voltage (HV) system was detected, such as a blown fuse.

Tesla fault code in the Battery Management System (BMS) module related to sw liquid sensor mia.

Tesla fault code in the Battery Management System (BMS) module related to sw bms mia.

Tesla fault code in the Battery Management System (BMS) module related to sw pac man.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an imbalance in the high voltage (HV) battery pack.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the precharge process is too slow to allow charging.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected an issue that has prevented precharging.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System has detected that precharging is too fast to allow charging.

Tesla fault code in the Battery Management System (BMS) module related to sw dtc.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) detected that responses from the thermal controller (THC) was missing on the Controller Area Network (CAN) bus. If this alert is present, the BMS may not have been receiving the full set of messages it expects to receive from the THC for the 10x message period.

Tesla fault code in the Battery Management System (BMS) module related to reserved w169 fc sw 1.

Tesla fault code in the Battery Management System (BMS) module related to reserved w169 fc sw 2.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the fast charge state has transitioned to a "Fault" state. If this alert is present, all of the conditions should gracefully shutdown fast charging, and the contactors will only open if the BMS state machine transitions to a "Standby" state.

Tesla fault code in the Battery Management System (BMS) module. The drive inverter Controller Area Network (CAN) communication is faulty.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there has been a reduction in the amount of current allowed while fast charging.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the fast charger is missing (MIA) due to an issue with the single wire Controller Area Network (CAN) communication between the fast charge hardware, the master charger, or the BMS. If this alert is present, it may also be set as a secondary alert in cases where the fast charge sequence has been interrupted by another issue.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the high voltage (HV) battery has experienced an under voltage event in one or more of its cells.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the high voltage (HV) battery has experienced an over voltage event in one or more of its cells.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is a communication issue with one or more of the modules on the Battery Monitor Board (BMB).

Tesla fault code in the Battery Management System (BMS) module. This alert prevents the Battery Monitoring Board (BMB) from triggering the hardware (HW) module alarm due to an internal error in Drive.

Tesla fault code in the Battery Management System (BMS) module. The Battery Monitoring Board (BMB) is overheating.

Tesla fault code in the Battery Management System (BMS) module. There is a thermal shutdown.

Tesla fault code in the Battery Management System (BMS) module. There is a problem with the programming and an issue with the TI536A's shadow RAM from the One Time Programmable (OTP).

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the Battery Monitoring Board (BMB) is not able to enumerate and get its address. If this alert is present, there may be an issue with the BMS addressing individual BMBs.

Tesla fault code in the Battery Management System (BMS) module. The Battery Monitoring Board (BMB) thermistor may be reading out of range or may be broken. If this alert is present, it may have been set before the code uses any errant values.

Tesla fault code in the Battery Management System (BMS) module. A high voltage (HV) battery temperature sensor error is detected.

Tesla fault code in the Battery Management System (BMS) module. A high voltage (HV) battery cell voltage sensor error is detected. There are three reasons for this alert to be reported by the Battery Management System (BMS): BMS_a107_errorType = BMS_A107_MODULEBRICK_MISMATCHThis alerts means that the voltage of the module differs by more than 35mV from the sum of the brick voltages of that module.BMS_a107_errorType = BMS_A107_TVSH_BLEEDV_LOWThis alert type means that the bleed resistor is turned on for that brick, but the voltage is too low (likely due to a stuck bleed resistor).BMS_a107_errorType = BMS_A107_TVSH_IMP_HIGH This alert type is the most common. The system has detected a high impedance on the sensor harness from the Battery Monitoring Board (BMB) to the bricks / module. It means that the measurements from that BMB cannot be trusted.

Tesla fault code in the Battery Management System (BMS) module. A high voltage (HV) battery internal voltage sensor error is detected.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected an issue with the bleed resistor.

Tesla fault code in the Battery Management System (BMS) module. When not in a Drive state, the brick voltages do not sum up to the module voltages accurately, and all of the module voltages do not sum to the pack voltage. This could due to a short / open circuit.

Tesla fault code in the Battery Management System (BMS) module related to sw bmb adc.

Tesla fault code in the Battery Management System (BMS) module. This alert provides more information on the contactor coil current, contactor states, precharge state, vehicle 12V, error type, and contactor ID.

Tesla fault code in the Battery Management System (BMS) module related to sw neg contactor anc.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected an issue with the fast charger contactors. If this alert is present, the vehicle may not be able to enter drive state and / or charge.

Tesla fault code in the Battery Management System (BMS) module related to sw neg contactor fc.

Tesla fault code in the Battery Management System (BMS) module related to sw bus v not reducing fc.

Tesla fault code in the Battery Management System (BMS) module related to sw dc link voltage anc.

Tesla fault code in the Battery Management System (BMS) module related to sw dc link voltage fc.

Tesla fault code in the Battery Management System (BMS) module. There is a possible issue with the moisture control system. This may be based on measuring the current drawn by the sub-system or the battery humidity response when using the system.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) Printed Circuit Board (PCB) humidity sensor is giving an implausible reading.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) Printed Circuit Board (PCB) temperature sensor is giving an impossible reading.

Tesla fault code in the Battery Management System (BMS) module. This alert points to a high voltage (HV) battery internal isolation breakdown detected. This condition is concerning and should be should be addressed rapidly and thoroughly. Thresholds: BMS_a123 will trip if the isolation is below 500 Ohm/Volt or 192 Kohms at 385V and the contactors are open. The alert will clear if the isolation goes over 1000 ohm/volt and the contactors are open.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) and the Battery Monitor Boards (BMBs) are not communicating as expected. The BMS constantly sends a message on the daisy chain for each BMB, and it is expected that every BMB will respond. If this alert is present, there have been more than 10 errors detected per second.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the contactor coil current sensor is not responding.

Tesla fault code in the Battery Management System (BMS) module. This alert indicates that there is an open circuit on the High voltage interlock loop (HVIL) blind mate pin on the high voltage (HV) rapid mate connector to the HV pack.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an issue with the complex programmable logic device (CPLD). If this alert is present, the CPLD may be broken. If it is, the contactor power should be disconnected for safety purposes.

Tesla fault code in the Battery Management System (BMS) module related to sw mil dtc set.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected an issue with the Voltage Sensor Harness (VSH) connector on the Battery Monitor Board (BMB).

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there has been a loss of half of the redundancy in the Battery Monitor Board (BMB) module alarm circuit.

Tesla fault code in the Battery Management System (BMS) module. This alert indicates there is a communication problem with PCB temperature sensor. However, there is no PCB temp sensor on the BMS, and no further action is required. Do not confuse this alert with BMS_w131_SW_PCB_Temp_Sensor_MIA.

Tesla fault code in the Battery Management System (BMS) module. There is a problem in programming the T536A's OTP, and a subsequent failure is reported.

Tesla fault code in the Battery Management System (BMS) module. This alert is triggered when a SW tool (e.g. Toolbox) connected to the vehicle requests an action from the Battery Management System (BMS) that is either improperly requested or is not permitted in the current BMS state. This alert clears immediately after it is set, and it is only used to inform the customer of an BMS action that is not permitted or is improperly requested.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) detected that the gateway failed to stop the drive cycle after a low power event and has moved the vehicle out of drive state.

Tesla fault code in the Battery Management System (BMS) module. This Network Management alert is a warning for any of the following: Sleep state overrideHeartbeat mismatch Quiet state overrideLost heartbeat warning

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the module is overheating.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an over discharged brick.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an overcharged brick.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an issue with the DC link voltage sensor.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is a high voltage (HV) battery current sensor error detected.

Tesla fault code in the Battery Management System (BMS) module. There is a contactor issue because of the low contactor power or the 12V battery has broken down.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the high voltage (HV) battery pack voltage has experienced a degradation. This is a warning for isolation degradation, and no action is taken based on this in the Battery Management System (BMS) firmware.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the Battery Monitor Board (BMB) OTP register does not match the expected value, and there is an illegal combination of BMS HWID and BMB ModuleID(s).

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the Complex Programmable Logic Device (CPLD) is not the appropriate version for the firmware currently installed on the vehicle.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the minimum or the maximum state of charge (SOC) changes by an abnormal amount when the vehicle wakes from sleep. This alert can be ignored if the SOC minimum and maximum is rejoined after the alert appears. This imbalance will be improved in a BMS firmware change.

Tesla fault code in the Battery Management System (BMS) module. An over discharged cell is preventing recharge.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) detected that the length of time it took the vehicle to precharge was too short. During the precharge sequence when the BMS is closing the contactors, the time it takes to reach target precharge voltage is too short. If the DC link voltage rise does not match a time constant with a 35% tolerance, then a precharge fault shall be asserted and precharge will be aborted. The precharge being too short means that the voltage on the DC Link bus (vehicle side of contactors) rose faster than expected, similar to how if there was not enough capacitance on the bus.

Tesla fault code in the Battery Management System (BMS) module. If the contactors are trying to close and the Direct Current (DC) link voltage rise does not match a time constant with a 35% tolerance, then a precharge fault shall be asserted and precharge aborted. During the precharge sequence when the Battery Management System (BMS) is closing the contactors, the time it takes to reach target precharge voltage is too long. The precharge taking too long means that the voltage on the DC Link bus (vehicle side of contactors) rose slower than expected, similar to how if there was too much capacitance or resistance to chassis on the bus

Tesla fault code in the Battery Management System (BMS) module. There is an external isolation issue with the Battery Management System (BMS).

Tesla fault code in the Battery Management System (BMS) module. The positive contactor does not fully open and is stuck or welded.

Tesla fault code in the Battery Management System (BMS) module. The negative contactor does not fully open and is stuck or welded.

Tesla fault code in the Battery Management System (BMS) module. The intent of this alert is to try to detect potential Battery Monitor Board (BMB) hardware (HW) issues related to the Analog to Digital Converter (ADC) Voltage Reference (Vref), which could lead to f107 Temperature Voltage Sense Harness (TVSH) faults. To detect a potential Vref HW issue, the Battery Management System (BMS) takes several "throw-away" samples from the ADC and makes sure they all match. If they do not match, there is a reference issue, and the alert is flagged.

Tesla fault code in the Battery Management System (BMS) module related to sw contactor stress.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the fast charging (FC) precharge process is too slow to allow charging.

Tesla fault code in the Battery Management System (BMS) module. This alert should never really trigger on a vehicle. It is possible the vehicle reported BMS_w164_SW_Brick_SOC_Imbalance instead.

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is a state of charge (SOC) imbalance in one or more of the battery packs that would otherwise be ignored by the Battery Monitor Boards (BMBs).

Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the delta between the brick that needs the least amp hours (Ah) compared to the one that needs the most is greater than 15Ah.

Tesla fault code in the Battery Management System (BMS) module related to sw uncontrolled regen.

Tesla unknown code in the Battery Management System (BMS) module. The battery is not able to charge. There may be a weak power source or the battery may be heating or cooling.

Tesla unknown code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that the high voltage (HV) battery ramp down is active.

Tesla unknown code in the Battery Management System (BMS) module. There is insufficient drive power. There may not be enough power from the battery for the vehicle to drive.

Tesla unknown code in the Battery Management System (BMS) module. The battery management system (BMS) has detected a charge cable has been inserted and has prevented the vehicle from entering drive state.

Tesla unknown code in the Battery Management System (BMS) module. The battery management system (BMS) has reduced the power to the battery until the vehicle begins charging. If this alert is present, the vehicle may have a low state of charge (SOC).

Tesla unknown code in the Battery Management System (BMS) module. The battery management system (BMS) has put the high voltage (HV) battery into an end of drive ramp down. If this alert is present, the HV battery may be at a low state of charge (SOC).

Tesla unknown code in the Battery Management System (BMS) module. The vehicle has entered limp mode.

Tesla unknown code in the Battery Management System (BMS) module. This alert indicates the Battery Management System (BMS) has detected an issue with the ability of the high voltage (HV) battery to fast charge.

Tesla unknown code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that the fast charger is not compatible with the firmware version installed on the vehicle.

Tesla unknown code in the Battery Management System (BMS) module. The vehicle is not configured for Supercharging.?

Tesla unknown code in the Battery Management System (BMS) module. The battery is not supplying enough power to heat the battery. If this alert is present, the vehicle may have been subjected to low temperatures.

Tesla unknown code in the Battery Management System (BMS) module. The vehicle is not configured for fast charging.

Tesla unknown code in the Battery Management System (BMS) module. This alert indicates the Battery Management System (BMS) has requested another isolation check before closing the contactors.

Tesla unknown code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that fast charging (CHAdeMO or Supercharger) was attempted while the State of Charge (SOC) was already at or above the charge limit that has been set by the customer.

Tesla unknown code in the Battery Management System (BMS) module. Internal condition to HV battery requiring limiting max allowed brick voltage. This alert was formerly named BMS_u018_Max_Charge_Limited in firmware versions prior to develop/2020.32. If BMS_u018_Max_Charge_Limited appears on the vehicle or in the logs, update the vehicle firmware to the current version.

Tesla unknown code in the Battery Management System (BMS) module. This alert is triggered by the Battery Management System (BMS) if one of the contactors has accumulated stress beyond a certain threshold.

Tesla unknown code in the Battery Management System (BMS) module. The Battery Management System (BMS) has prevented the vehicle from precharging for fast charging.

Tesla unknown code in the Battery Management System (BMS) module related to sc post out of service.

Tesla unknown code in the Battery Management System (BMS) module related to evse update in progress.

Tesla unknown code in the Battery Management System (BMS) module related to adapter update in progress.

Tesla unknown code in the Battery Management System (BMS) module. "Uncorking" 75D vehicles means a couple of things: Increasing the motor torque.Increasing the maximum discharge current allowed for the high voltage (HV) battery. Some early 75kwh HV batteries were built with a shunt that had a hardware over current (HWOC) threshold which could trigger false HWOCs during a wide open throttle event due to ripple current that could cause the current to go over the uncorked current. In this case, the Battery Management System (BMS) will report the alert BMS_u024_Not_Uncorked_Capable? to let the customer and Service know that the vehicle is uncorked with a non-suitable HV battery. The current limit will not be increased, and the vehicle will not have uncorked performance.

Tesla unknown code in the Battery Management System (BMS) module. This alert points to the Battery Management System (BMS) having slightly reduced the maximum allowed brick voltage from its original value. This does not affect ability for the high voltage (HV) battery to charge to the user-facing 100% state of charge (SOC).

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an issue with the Battery Monitor Board (BMB) module alarm. If this alert is present, the BMB module alarm may be damaged.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) is reporting that there is a hardware issue with the high voltage interlocking loop (HVIL). If this alert is present, the vehicle may have been in Drive and the contactors did not open. Once the vehicle exits Drive, the alert will become a fault while in support mode, and the vehicle may not be able to support 12V, charge, or re-enter Drive.

Tesla warning code in the Battery Management System (BMS) module. The high voltage (HV) battery pack could not close the contactors because of another system fault.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the Battery Monitor Board (BMB) is overheating.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has set this warning due to a hardware overcurrent (HWOC) event, which is preventing the contactors from closing. If this alert is present or is repeatedly setting, the BMS may be using it as a counter to record the number of overcurrent events that have occurred.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has set this alert to indefinitely prevent the contactors from closing until a special service action is performed.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is a high voltage (HV) battery isolation sensor error.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the isolation resistance has exceeded the threshold while the contactors are closed. If this alert is present, the isolation has dropped below 190 kOhm with the contactors closed. The alert will clear when the isolation exceeds the 190 kOhm threshold while the contactors are closed.

Tesla warning code in the Battery Management System (BMS) module. There is a high voltage (HV) battery management system (BMS) error detected.

Tesla warning code in the Battery Management System (BMS) module. There is a communication problem between the Battery Management System (BMS) and the Battery Monitoring Boards (BMBs). One or more of the voltage or temperature sensor readings are missing (MIA).

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has not received a response from the internal high voltage (HV) battery current sensor and has reported the sensor as missing (MIA).

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an internal high voltage (HV) battery current sensor error.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) detected that there is a high voltage (HV) battery voltage sensing error. If this alert is present, there is more than a 3% difference between the sum of the brick voltages and the pack voltage measurements.

Tesla warning code in the Battery Management System (BMS) module. There is an issue with the power supply to the Battery Management System (BMS), and the BMS is operating at an out-of-bounds supply voltage.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there has been an issue while charging and has stopped charging. If this alert is present, there may be an issue with the power source or the charger.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the high voltage (HV) system has been disconnected.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has not received a response from the Drive Inverter Controller Area Network (CAN) bus and has reported the Drive Inverter as missing (MIA).

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected an internal error while the vehicle was in a drive state and has prevented the Battery Monitor Board (BMB) from setting the hardware (HW) Module Alarm.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the Battery Monitor Board (BMB) is overheating.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the there has been a thermal shutdown on the Battery Monitor Board (BMB).

Tesla warning code in the Battery Management System (BMS) module. There is a problem with the programming.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the high voltage (HV) battery temperature sensor has experienced an error.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is a high voltage (HV) battery cell voltage sensor error.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the high voltage (HV) battery internal voltage sensor has experienced an error.

Tesla warning code in the Battery Management System (BMS) module. When the vehicle is not in a drive state, the sum of the brick voltage values do not match the module voltage values, and the sum of all of the module voltages do not match the pack voltage value. If this alert is present, there may be a short or open circuit.

Tesla warning code in the Battery Management System (BMS) module. The target max brick voltage for charge is limited to the voltage corresponding to 50% SOC

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the isolation resistance internal to the high voltage (HV) battery has exceeded the threshold while the contactors are open. If this alert is present, the isolation has dropped below 190 kOhm with the contactors open. The alert will clear when the isolation exceeds 380 kOhm threshold while the contactors are open.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an issue with programming the T536A's OTP or there has been a subsequent failure being reported.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an issue with the 12V power supply to the contactors.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an over discharged cell. If this alert is present, the vehicle may not be able to charge.

Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that there is an isolation issue external to the high voltage (HV) battery.

Tesla warning code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that the positive contactor is stuck or welded. The BMS detects that the positive contactor is stuck or welded. This alert must be manually cleared. Inability to charge, drive, or support the low voltage (LV) system.

Tesla warning code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that there is a potential battery management board (BMB) hardware issue related to the ADC Vref. If this alert is present, the samples taken from the ADC by the BMS do not match, and there may be a reference issue.

Tesla warning code in the Battery Management System (BMS) module. This alert points to an excessive contactor stress index, and the data most likely points to worn contactors. The Battery Management System (BMS) does not reduce vehicle performances just with this alert. The intent of the alert is to warn about stress starting to accumulate on at least one contactor.

Tesla warning code in the Battery Management System (BMS) module related to sw contactor wot count.

Tesla warning code in the Battery Management System (BMS) module. This alert is for engineering visibility only. It does not mean that the pack has an issue. Do not replace the pack due to the presence of this alert. BMS_w164 points to an "intra-bmb" State of Charge (SOC) Imbalance condition.

Tesla warning code in the Battery Management System (BMS) module. This alert is for engineering visibility. It does not mean the pack has an issue, and the pack should not be replaced due to this alert. The goal of the alert is to detect low State of Charge (SOC) outlier conditions at the pack level that would otherwise be ignored by the "intra-bmb" check (BMS_w164). Alert Set Condition: (SOC.avg - SOC.min) > 8% and BMS_w164 is not being reported.

Tesla warning code in the Battery Management System (BMS) module. This alert is for engineering visibility. It does not mean there is an issue with the pack, and the pack should not be replaced due to the presence of this alert. The alert is reported when the delta between the brick that needs the least amp hours (Ah) compared to the one that needs the most Ah is greater than 15Ah. Alert Set Condition: (maxAhToBeCharged - minAhToBeCharged) > 15Ah ??

Tesla warning code in the Battery Management System (BMS) module related to sw uncontrolled regen.

Tesla warning code in the Battery Management System (BMS) module. This alert points to a difference between the sum of the bricks of one module and the module voltage. This alert can be concerning as it reflects a bad voltage sensing from a brick.

Tesla warning code in the Battery Management System (BMS) module. There is a module that is over voltage.

Tesla warning code in the Battery Management System (BMS) module. After installing a re-manufactured or new high voltage (HV) battery and performing the replacement routine, the Battery Management System (BMS) triggers this alert, which is hidden. The log data reads, "Pack does not support Permanent Magnet motor." The vehicle is still is able to drive with no customer-facing alerts.

Tesla warning code in the Battery Management System (BMS) module. The addition of a Limp Reaction to Repeated Isolation (f027) alert so the customers could feel a limp response a few drive cycles before the vehicle became Vehicle Off Road (VOR) was requested to allow customers to have ample warning and a noticeable driving symptom before the VOR occurs. The current specification will set a limp when one of the following conditions are met: 2 drive cycles with alert 35 (SW_Isolation). 7 drive cycles with alert 142 (SW_Isolation_Degradatio). 2 drive cycles with alert 028 (SW_Drive_Iso_StdDev).

Tesla alert code in the Battery Management System module. Battery Thermal Runaway Risk - Stop Vehicle

Tesla alert BMS_a079 means the vehicle has detected an internal high-voltage battery condition that can limit the maximum charge level, commonly around 50% state of charge. Do not use this page as drive-clearance; check the vehicle display for restrictions and schedule Tesla Service if the alert persists.

Tesla warning code in the Battery Management System module. Battery Management System Warning