Tesla PCS Alert Codes

Tesla alert code in the Power Conversion System (PCS) module related to chg hw input oc.

Tesla alert code in the Power Conversion System (PCS) module. Charger output over current

Tesla alert code in the Power Conversion System (PCS) module related to chg hw input ov.

Tesla alert code in the Power Conversion System (PCS) module related to chg hw int bus ov.

Tesla alert code in the Power Conversion System (PCS) module. Charger output over voltage

Tesla alert code in the Power Conversion System (PCS) module. Charger failed to precharge the intermediate bus during SCR precharge SCR precharge portion of charger phase startup sequence failed AC voltage not present while being commanded to charge Charger does not detect AC input voltage to phase while starting up Inability to start AC charging Charger detects phase termperature is too high to continue charging Charger phase temperature exceeds overtemperature threshold for more than one second Charger phase temperature is below overtemperature clear threshold for more than five seconds PCS DCDC detects 12V bus voltage is lower than the safety threshold to continue its operation DCDC converter detects that low voltage bus voltage is below undervoltage threshold PCS detects the HV bus impedance is higher than the expected value DCDC converter detects high impedance on HV bus when precharging (capacitance too low) Charger failed to keep intermediate bus at required voltage Charger intermediate bus voltage is below minimum voltage threshold

Tesla alert code in the Power Conversion System (PCS) module related to chg phase temp hot.

Tesla alert code in the Power Conversion System (PCS) module related to chg phase over temp.

Tesla alert code in the Power Conversion System (PCS) module. Charger is not able to regulate its input current Charger PFC current regulator error exceeds threshold Charger PFC current regulator error is below clear threshold PCS DCDC has reached its max hardware power capability Charging is inhibited due to low 12V Charger detects 12V bus voltage is below 7V for more than 500ms Charger detects 12V bus voltage is above 7V PCS has detected at least one damaged AC charging phase, AC charging power will be limited Power conversion system detected reset while enabling a phase, and did not attempt to re-enable phase Power conversion system is reset or power cycled Charger detects wall power is removed while charging info from manualPCS_A017 Charger detects wall power was unexpectedly removed while charging Charging faulted due to too large of a voltage drop between starting charge and during charge info from manualPCS_A054 Charger detects greater than 14% input voltage drop after ramping power Inability to AC charge, possibly due to bad wiring external to vehicle PCS is not able to boot CPU2 and AC charging functionality is lost Power conversion system was unable to boot CPU2 Power conversion system boots CPU2 successfully DCDC PWM enable hardline de-asserted while DCDC was commanded to be active DCDC converter detected that enable line was de-asserted unexpectedly

Tesla alert code in the Power Conversion System (PCS) module related to chg int bus v regulation.

Tesla alert code in the Power Conversion System (PCS) module. Charger is not able to regulate its output current Charger LLC current regulator error exceeds threshold Charger LLC current regulator error is below clear threhsold

Tesla alert code in the Power Conversion System (PCS) module. Charger detects input current going out of the software tracking input current tracer band Charger input current detected outside of the expected software tracking input current band

Tesla alert code in the Power Conversion System (PCS) module. Charger failed to precharge the intermediate bus during boost precharge Boost precharge portion of charger phase startup sequence failed Current measurement changed too much between switching cycles (only active in phase A) Charger AC input current changed too much between switching cycles

Tesla alert code in the Power Conversion System (PCS) module related to chg temp rationality.

Tesla alert code in the Power Conversion System (PCS) module related to chg12v uv.

Tesla alert code in the Power Conversion System (PCS) module related to chg all phases faulted.

Tesla alert code in the Power Conversion System (PCS) module related to chg wall power removal.

Tesla alert code in the Power Conversion System (PCS) module related to chg unknown grid config.

Tesla alert code in the Power Conversion System (PCS) module related to ac charge power limited.

Tesla alert code in the Power Conversion System (PCS) module. PCS charging hardware enable line does not match CAN signal Charger detects that sensed enable hardline state does not match state reported on CAN for more than five seconds Charger detects that sensed enable hardline state matches state reported on CAN for more than one second

Tesla alert code in the Power Conversion System (PCS) module related to hvp mia.

Tesla alert code in the Power Conversion System (PCS) module related to bms mia.

Tesla alert code in the Power Conversion System (PCS) module related to cp mia.

Tesla alert code in the Power Conversion System (PCS) module related to vcfront mia.

Tesla alert code in the Power Conversion System (PCS) module related to cpu2malfunction.

Tesla alert code in the Power Conversion System (PCS) module related to watchdog alarmed.

Tesla alert code in the Power Conversion System (PCS) module. PCS does not detect coolant flowing Charger detects that coolant flow is insufficient Charge cable is removed or inserted or battery management system issues clear fault request Charging derated due to too large of a voltage drop between starting charge and during charge info from manualPCS_A053 Charger detects greater than 12% input voltage drop after ramping power Charger input voltage exceeds alert clear threshold Reduced AC charge rate, possibly due to bad wiring external to vehicle PCS detects the HV bus impedance is lower than the expected value DCDC converter detects low impedance on HV bus when precharging (short circuit or capacitance too high) Charging derated due to high measured grid impedance (impedance detection algorithmn) PCS experienced a watchdog reset

Tesla alert code in the Power Conversion System (PCS) module related to chg output uv.

Tesla alert code in the Power Conversion System (PCS) module related to chg power rationality.

Tesla alert code in the Power Conversion System (PCS) module related to can rationality.

Tesla alert code in the Power Conversion System (PCS) module related to ui mia.

Tesla alert code in the Power Conversion System (PCS) module. Charger detects unstable grid quality and AC charge power may be limited Charger detects possible poor grid power quality causing phase faults Charger phases are no longer faulted

Tesla alert code in the Power Conversion System (PCS) module related to hv bus uv.

Tesla alert code in the Power Conversion System (PCS) module related to hv bus ov.

Tesla alert code in the Power Conversion System (PCS) module related to lv bus uv.

Tesla alert code in the Power Conversion System (PCS) module related to lv bus ov.

Tesla alert code in the Power Conversion System (PCS) module related to resonant tank oc.

Tesla alert code in the Power Conversion System (PCS) module related to cla faulted.

Tesla alert code in the Power Conversion System (PCS) module related to sd module clk fault.

Tesla alert code in the Power Conversion System (PCS) module related to dcdc max power reached.

Tesla alert code in the Power Conversion System (PCS) module related to dcdc over temp.

Tesla alert code in the Power Conversion System (PCS) module. PCS DCDC hardware enable line does not match CAN signal DCDC converter detects that sensed enable hardline state does not match state reported on CAN for more than five seconds DCDC converter detects that sensed enable hardline state matches state reported on CAN for more than one second AC charging is stopped because DCDC is too hot DCDC converter temperature exceeds threshold for more than five seconds while AC charging is active DCDC converter temperature is below clear threshold for more than twenty seconds Charger output voltage sensor mismatches high voltage processor's sensed value on CAN Charger output voltage sensor mismatches high voltage processor's sensed value on CAN for more than three seconds Charger output voltage sensor value matches high voltage processor's sensed value on CAN for more than 500ms PCS charging input RMS over-voltage Charger RMS AC input voltage exceeds overvoltage threshold

Tesla alert code in the Power Conversion System (PCS) module. PCS DCDC failed to precharge HV bus to the target voltage DCDC converter was unable to precharge HV bus when commanded to

Tesla alert code in the Power Conversion System (PCS) module related to 12v support regulation.

Tesla alert code in the Power Conversion System (PCS) module related to hv bus low impedance.

Tesla alert code in the Power Conversion System (PCS) module related to hv bus high impedence.

Tesla alert code in the Power Conversion System (PCS) module. PCS detects that at least one bootloader has mismatched CRC Power conversion system application detects that calculated bootloader CRC is unexpected Power conversion system detects that bootloader CRC matches expected value Inability to update, inability to boot AC charger

Tesla alert code in the Power Conversion System (PCS) module related to software assertion.

Tesla alert code in the Power Conversion System (PCS) module related to dcdc temp rationality.

Tesla alert code in the Power Conversion System (PCS) module. DCDC converter 12V support has faulted Inability to support 12V system

Tesla alert code in the Power Conversion System (PCS) module. PCS AC charging is stopped

Tesla alert code in the Power Conversion System (PCS) module related to ac voltage not present.

Tesla alert code in the Power Conversion System (PCS) module related to chg input v drop high.

Tesla alert code in the Power Conversion System (PCS) module related to chg input v drop too high.

Tesla alert code in the Power Conversion System (PCS) module. TBD - not yet implemented

Tesla alert code in the Power Conversion System (PCS) module. Charging faulted due to high measured grid impedance (impedance detection algorithmn) PCS DCDC detects its temperature is too hot to continue operation DCDC converter temperature exceeds overtemperature threshold for more than one second DCDC converter temperature is below overtemperature clear threshold PCS charging input under-frequency Charger AC input frequency is below minimum frequency threshold for more than one second Charger AC input frequency exceeds minimum frequency threshold Charger input line over current Charger AC input current exceeds maximum input current threshold Charger intermediate bus over voltage Charger intermediate bus voltage exceeds maximum intermedate bus voltage threshold

Tesla alert code in the Power Conversion System (PCS) module related to chg input over freq.

Tesla alert code in the Power Conversion System (PCS) module related to chg input under freq.

Tesla alert code in the Power Conversion System (PCS) module related to chg input ov rms.

Tesla alert code in the Power Conversion System (PCS) module related to chg input ov peak.

Tesla alert code in the Power Conversion System (PCS) module related to chg v line rationality.

Tesla alert code in the Power Conversion System (PCS) module related to chg i line rationality.

Tesla alert code in the Power Conversion System (PCS) module related to chg v out rationality.

Tesla alert code in the Power Conversion System (PCS) module related to chg i out rationality.

Tesla alert code in the Power Conversion System (PCS) module related to chg pll not locked.

Tesla alert code in the Power Conversion System (PCS) module. Inability to AC charge

Tesla alert code in the Power Conversion System (PCS) module related to dcdc lv rationality.

Tesla alert code in the Power Conversion System (PCS) module related to dcdc tankv rationality.

Tesla alert code in the Power Conversion System (PCS) module related to chg pfc line didt.

Tesla alert code in the Power Conversion System (PCS) module. Reduced AC charge rate

Tesla alert code in the Power Conversion System (PCS) module. Charger phase detected the accumulated difference between estimated current and measured current is too high (only active in phase A) Charger phase detected the accumulated difference between estimated current and measured current is too high Charger detects that control law accelerator is not running Charger detects that control law accelerator is running

Tesla alert code in the Power Conversion System (PCS) module. CPU2 CLA is not running

Tesla alert code in the Power Conversion System (PCS) module. AC voltage is present when not expected (indicates a bad charge cable / EVSE) Charger detects AC input voltage when not requested for more than five seconds Charger does not detect AC input voltage when not requested

Tesla alert code in the Power Conversion System (PCS) module. PCS DCDC failed to discharge HV bus DCDC converter was unable to discharge HV bus when commanded to

Tesla alert code in the Power Conversion System (PCS) module. PCS DCDC timed out when attempting to discharge HV bus DCDC converter timed out when attempting to discharge HV bus Inability to perform vehicle precharge, CHAdeMO and GB DC compatibility may be impacted Input voltage measurement changed too much between switching cycles (only active in phase A) Charger AC input voltage changed too much between switching cycles Charger input line over voltage Charger AC input voltage peak level exceeds maximum input voltage peak threshold Reduced AC charge rate or inability to AC charge, possibly due to incompatible grid PCS DCDC temperature sensor is reporting irrational value DCDC converter temperature is outside expected range for more than one second DCDC converter temperature is within expected range Reduced available DCDC output power PCS DCDC HV bus voltage reading differs from HVP HV bus voltage reading by an excessive amount DCDC converter high voltage bus voltage sensor mismatches high voltage processor's sensed value on CAN for more than three seconds DCDC converter high voltage bus voltage sensor matches high voltage processor's sensed value on CAN for more than 500ms

Tesla alert code in the Power Conversion System (PCS) module related to dcdc en deasserted err.

Tesla alert code in the Power Conversion System (PCS) module. PCS detects the wobble signature from AC power wall PCS no longer detect the wobble signature from AC power wall

Tesla alert code in the Power Conversion System (PCS) module related to chg stop dcdc too hot.

Tesla alert code in the Power Conversion System (PCS) module related to eeprom operation error.

Tesla alert code in the Power Conversion System (PCS) module related to damaged phase detected.

Tesla alert code in the Power Conversion System (PCS) module related to dcdc pchg timeout.

Tesla alert code in the Power Conversion System (PCS) module. HV bus voltage unsafe for drive inverter while PCS DCDC is attempting to precharge HV bus DCDC converter detected high voltage bus voltage profile anomoly during precharge PCS application detects an unexpected software behavior during its operation PCS charging input peak over-voltage Charger peak AC input voltage exceeds overvoltage threshold

Tesla alert code in the Power Conversion System (PCS) module related to trigger odin.

Tesla alert code in the Power Conversion System (PCS) module. PCS detects an dangerous voltage drop on DC link when the voltage is in drive inverter's parasitic diode region PCS does not receive CAN messages from VCFRONT Charger does not receive all expected CAN messages from front vehicle controller Charger recieves all expected CAN messages from front vehicle controller DCDC converter does not regulate LV bus voltage to target, 12V battery may not charge correctly DCDC tank current period is too long, indicating that DCDC FETs are not switching properly Charger DC output current exceeds maximum output current threshold

Tesla alert code in the Power Conversion System (PCS) module related to dcdc fets not switching.

Tesla alert code in the Power Conversion System (PCS) module. DCDC does not have enough cooling, DCDC system may limit its output power DCDC converter detects difference in ambient temperature vs. DCDC converter temperature exceeding threshold, indicating that cooling may not be sufficient DCDC converter detects difference in ambient temperature vs. DCDC temperature is below threshold PCS DCDC detects a fault condition in its CLA co-processor DCDC converter control law accelerator detects irrational condition

Tesla alert code in the Power Conversion System (PCS) module. PCS NVMM detect an error on EEPROM records

Tesla alert code in the Power Conversion System (PCS) module. PCS detects grid frequency starts to droop away from its norminal level, possibly the grid is under heavy loads PCS detects grid frequency starts to droops away from its norminal level AC charging power will be temporarily limited based on the droop amount

Tesla alert code in the Power Conversion System (PCS) module. PCS DCDC HV bus is not discharging with specified rate

Tesla alert code in the Power Conversion System (PCS) module. PCS detects one or more power converter expected AC voltage sources are missing, possibly due to bad utility wiring or vehicle HV harness connection Charger detects that one or more expected AC voltage sources is missing, possibly due to bad external wiring Charger state machine retries or charge cable is cycled

Tesla alert code in the Power Conversion System (PCS) module related to chg int bus rationality.

Tesla alert code in the Power Conversion System (PCS) module. Charging power is limited due to bus voltage ripple, suspected electrolytic capacitor degradation

Tesla alert code in the Power Conversion System (PCS) module related to power rail rationality.

Tesla alert code in the Power Conversion System (PCS) module related to pcs dcdc need service.

Tesla alert code in the Power Conversion System (PCS) module. PCS enables the DCDC control to run under sensorless mode, possibly due to some malfunction hardware When 5V logic power rail is irrational and DCDC experienced faults when using it is original control scheme When HVP changes its pcs DCDC command from one to another DCDC running under sensorless control mode and some DCDC hardware protection may be affected Charger power is limited and not able to meet user requested power Charger is unable to meet user-requested power for more than three seconds Charger is able to meet user-requested power for more than five seconds

Tesla alert code in the Power Conversion System (PCS) module related to micro grid over loaded.

Tesla alert code in the Power Conversion System (PCS) module related to reboot phase detected.

Tesla alert code in the Power Conversion System (PCS) module. High DC offset present on charger output current sensor when charging is not enabled Charger output current sensor offset exceeds threshold for more than three seconds while charging is inactive Charger output current sensor offset is below clear threshold for more than 500ms PCS output under-voltage detected while being commanded to charge Charger DC output voltage is below minimum output voltage threshold PCS charging input over-frequency Charger AC input frequency exceeds maximum frequency threshold for more than one second Charger AC input frequency is below maximum frequency threshold PCS DCDC is not able to regulate LV output DCDC converter 12V support regulator detects irrational condition Charger DC output voltage exceeds maximum output voltage threshold PCS DCDC detects pack voltage is lower than the safety threshold to continue its 12V support operation DCDC converter detects that high voltage bus voltage is below undervoltage threshold

Tesla alert code in the Power Conversion System (PCS) module. PCS detects the grid frequency droops significantly, indicating the grid is over loaded PCS does not receive CAN messages from CP Charger does not receive all expected CAN messages from charge port Charger recieves all expected CAN messages from charge port PCS detects its sigma delta module has malfunctioned DCDC sigma delta module detects clock fault

Tesla alert code in the Power Conversion System (PCS) module. An alert to indicate that this PCS may experienced viper chip issue that could impact AC charging functionality PCS does not receive CAN messages from BMS Charger does not receive all expected CAN messages from battery management system Charger recieves all expected CAN messages from battery management system Inability to AC charge, inability to precharge HV bus, inability to drive Power conversion system DCDC malfunction detected, PCS service is required When 5V logic power rail exceeds 5.8V continuously for more than 1 minute Service alert will latch untill power cycled so will not be cleard at run time Car unable to start or drive, LV battery and system cannot be supported, AC charging functionality may also be affected

Tesla alert code in the Power Conversion System (PCS) module. The machine model running on a power conversion module detects one or more irrational behavior(s)

Tesla alert code in the Power Conversion System (PCS) module. PCS got reset or powered cycle unexpected while it is commanded to perform DCDC operation High DC offset present on charger input voltage sensor when voltage is not expected Charger line voltage sensor DC offset exceeds threshold for more than five seconds Charger line voltage sensor DC offset is below clear threshold for more than 500ms PCS DCDC tank voltage sensor's DC offset exceeds threshold while DCDC converter is inactive DCDC converter tank voltage sensor's DC offset exceeds threshold while DCDC converter is inactive DCDC converter tank voltage sensor's DC offset is within threshold while DCDC converter is inactive Pedal Monitor Warning: Torque Intervention. The safety monitor sets this condition and indicates diagnostic information in its payload for root cause analysis. This alert will clear on the next drive cycle. The safety monitor will inhibit torque and excess heat production for the remainder of the drive cycle. Pedal Monitor Warning: DI and PM versions do not match. This condition is set when the inter-process communication version between DI and PM is mismatched. Prevents DI ECU from booting, presents itself as a complete inhibition of drive unit capability. Pedal Monitor Warning: Parking Brake CAN node is missing. The safety monitor sets this condition when CAN communication from Parking Brake CAN node is considered irrational or missing. Parking Brake CAN node is considered not communicating on CAN for remainder of drive cycle. Pedal Monitor Warning: DIS CAN node is missing. The safety monitor sets this condition when CAN communication from DIS is considered irrational or missing. DIS is considered not communicating on CAN for remainder of drive cycle. Pedal Monitor Warning: Crystal oscillator inactive. This condition is at application boot when the external crystal is not the active clock source. This alert does not clear during a power-cycle. Unit cannot produce torque with this alert present. Pedal Monitor Warning: CAN hardware error. This condiiton is set when CAN peripheral hardware indicates an overrun or transmission error on the secondary CAN bus. This alert will clear when CAN communication is re-established. No immediate impact, may lead to indicating an MIA condition for the specific CAN ID listed in alert payload.

Tesla alert code in the Power Conversion System (PCS) module. PCS detected that the LV bus voltage enetered the foldback region during the HV bus precharge PCS has detected at least one reset during the boot up process. AC charging power might be limited if phase damaged is detected Power conversion system detected reset while enabling a phase Reduced AC charge rate or inability to AC charge if pahse damaged is detected PCS intermediate bus voltage behavior is irrational, may indicate a hardware issue Charger detects phase temperature is high Charger phase temperature exceeds derating start threshold for more than five seconds Charger phase temperature is below derating start threshold for more than five seconds PCS DCDC detects 12V bus voltage is higher than the safety threshold to continue its operation DCDC converter detects that low voltage bus voltage exceeds overvoltage threshold PCS detects grid frequency droop below a certain level AC charging will be blocked to reduce load for the grid Charger phase temperature is irrational Charger phase temperature is outside expected range for more than one second Charger phase temperature is within expected range PCS does not receive CAN messages from UI High DC offset present on charger input current sensor when charge functionality is not enabled. Indicates issue with vehicle if seen multiple times over multiple days. Charger line current sensor DC offset exceeds threshold for more than three seconds while charging is inactive Charger line current sensor DC offset is below clear threshold for more than 500ms

Tesla alert code in the Power Conversion System (PCS) module. PCS ambient temperature sensor is reporting an irrational value Ambient temperature is outside of expected range for more than 1s Ambient temperature is within expected range DCDC insufficient cooling check will be disabled if the ambient temp sensor is irrational PCS EEPROM software module has detected an error Power conversion system EEPROM software module has detected an error Clears directly after alert is set Kilowatt-hour counter functionality may be impacted, damaged phase detection may be impacted

Tesla alert code in the Power Conversion System (PCS) module. A redundant voltage sensor is broken or irrational. Used for single phase hardware variants only

Tesla alert code in the Power Conversion System (PCS) module. PCS bootloader configured the clock source to use the internal clock (INTOSC2), because the DSP has reported a missing clock from the external crystal oscillator On boot, PCS is not using the external crystal oscillator (XTALOSC) No clear condition during operation. The set condition is evaluated on boot, and will remain set until power cycled or reset. Internal oscillator is less precise, potentially has system behavior impact Charger detects unknown grid configuration Charger state machine clears faults Inability to AC charge, possibly due to incompatible grid

Tesla alert code in the Power Conversion System (PCS) module. PCS does not receive the PCS VC DCDC interface CAN messages from Charger does not receive all expected DCDC interface CAN messages from vehicle controller PCS recieves all expected DCDC interface CAN messages from vehicle controller DCDC converter does not regulate LV bus voltage to target, LV battery may not charge correctly Charger is unable to meet BMS's requested power Charger is unable to meet BMS's requested power within 1kW for more than thirty seconds Charger is able to meet BMS requested power within 1kW for more than one second

Tesla alert code in the Power Conversion System (PCS) module. PCS detects it is misconfigured, please refer to the alert toolbox article to decode the miss configuration condition and fix them accordingly PCS detects there are misconfigurations. The misconfiguration condition(s) is fixed. DCDC and/or AC charging may not function properly All charger phases are faulted, not able to deliver power to the battery pack All charger phases are faulted and retries are exhausted Charger is not able to regulate its intermediate bus voltage Charger intermediate bus voltage regulator error exceeds threshold Charger intermediate bus voltage regulator error is below clear threshold PCS does not receive CAN messages from HVP Charger does not receive all expected CAN messages from high voltage processor Charger recieves all expected CAN messages from high voltage processor PCS DCDC detects resonant tank over current event DCDC converter detects resonant tank current exceeds overcurrent threshold PCS CAN receiver encounters error while receiveing message Power conversion system CAN receiver encounters error while receiveing message Power conversion system CAN receiver does not detect any errors for more than five seconds Inability to AC charge, inability to precharge HV bus, inability to support 12V system, inability to drive PCS detects one of its logical power rail's measurement becomes irrational Power conversion system detects that a logical power rail voltage is outside expected range for more than one second Power conversion system detects that all logical power rail voltages are within expected range for more than one second Inability to precharge HV bus, inability to support 12V system, inability to AC charge, inability to drive