Tesla HVP Alert Codes
High Voltage Protection reference page with 52 Tesla alert codes, 19 detailed descriptions, severity counts, and diagnostic context.
What the HVP system covers
High Voltage Protection alerts belong to Tesla's proprietary diagnostic alert system and are grouped under the battery category.
Alert type breakdown
Tesla HVP code list
Rows with a linked code have a dedicated detail page.
| Code | Severity | Type | Description |
|---|---|---|---|
| HVP_a007 HVP_a007_OverCurrentFault | Caution | Alert | HVP_a007 - Over Current Fault Tesla alert code in the High Voltage Protection (HVP) module. The high voltage (HV) system has reported an over-current condition. When this condition is detected, the pyro disconnect is fired to protect the HV battery, the vehicle, and the vehicle?s immediate environment from potential damage. |
| HVP_w001 HVP_w001_WatchdogReset | Warning | Warning | HVP_w001 - Watchdog Reset Tesla warning code in the High Voltage Protection (HVP) module related to watchdog reset. |
| HVP_w002 HVP_w002_UnusedAlert2 | Warning | Warning | HVP_w002 - Unused Alert2 Tesla warning code in the High Voltage Protection (HVP) module related to unused alert2. |
| HVP_w003 HVP_w003_SwAssertion | Warning | Warning | HVP_w003 - SW Assertion Tesla warning code in the High Voltage Protection (HVP) module related to sw assertion. |
| HVP_w005 HVP_w005_OverDchgCurrentFault | Warning | Warning | HVP_w005 - Over Dchg Current Fault Tesla warning code in the High Voltage Protection (HVP) module related to over dchg current fault. |
| HVP_w006 HVP_w006_OverChargeCurrentFault | Warning | Warning | HVP_w006 - Over Charge Current Fault Tesla warning code in the High Voltage Protection (HVP) module. Warns if the pack charge current is above max charge current limit The pack charge current is above max charge current limit for X duration (in msec) The pack charge current is below max charge current limit The DC charging will end and contactors may open immdediately or pyro may disconnect Warns if the CP ECU has faulted These charging will not be allowed Sets if an HVIL fault is detected. Contactors cannot close (car will no longer drive) if the contactors are currently open. If no repairs were performed and the alert clears on its own, there is risk of reoccurrence. The HVIL is broken or HVIL nodes are lower than expected Contactors will not close, it may open if vehicle not in drive Warn if pack contactor enter to the BLOCKED state Warns if the Energy reserve voltage supply is below minimum voltage threshold The Energy reserve voltage supply is below minimum voltage threshold The Energy reserve voltage supply is above minimum voltage threshold The pyro diagnostics may fail, the contactors will not close warn if harware triggers to blow the pyro This is an indication that pyro was blown The HVP config block may be missing, incorrect, or unsupported The HVP is unable to initialize configuration parameters |
| HVP_w007 HVP_w007_OverCurrentFault | Warning | Warning | HVP_w007 - Over Current Fault Tesla warning code in the High Voltage Protection (HVP) module related to over current fault. |
| HVP_w008 HVP_w008_OverTemperatureFault | Warning | Warning | HVP_w008 - Over Temperature Fault Tesla warning code in the High Voltage Protection (HVP) module related to over temperature fault. |
| HVP_w009 HVP_w009_OverVoltageFault | Warning | Warning | HVP_w009 - Over Voltage Fault Tesla warning code in the High Voltage Protection (HVP) module related to over voltage fault. |
| HVP_w010 HVP_w010_UnderVoltageFault | Warning | Warning | HVP_w010 - Under Voltage Fault Tesla warning code in the High Voltage Protection (HVP) module related to under voltage fault. |
| HVP_w011 HVP_w011_PrimaryBmbMiaFault | Warning | Warning | HVP_w011 - Primary Bmb Mia Fault Tesla warning code in the High Voltage Protection (HVP) module related to primary bmb mia fault. |
| HVP_w014 HVP_w014_BmsMiaOnHviFault | Warning | Warning | HVP_w014 - BMS Mia On Hvi Fault Tesla warning code in the High Voltage Protection (HVP) module related to bms mia on hvi fault. |
| HVP_w015 HVP_w015_CpMiaFault | Warning | Warning | HVP_w015 - Cp Mia Fault Tesla warning code in the High Voltage Protection (HVP) module. The CP node is mia on HVS CAN The pyro fuse will blow |
| HVP_w016 HVP_w016_PcsMiaFault | Warning | Warning | HVP_w016 - Pcs Mia Fault Tesla warning code in the High Voltage Protection (HVP) module related to pcs mia fault. |
| HVP_w017 HVP_w017_GtwMiaFault | Warning | Warning | HVP_w017 - Gtw Mia Fault Tesla warning code in the High Voltage Protection (HVP) module related to gtw mia fault. |
| HVP_w019 HVP_w019_CpFault | Warning | Warning | HVP_w019 - Cp Fault Tesla warning code in the High Voltage Protection (HVP) module. The CP ECU has faulted The CP ECU is not faulted |
| HVP_w020 HVP_w020_ShuntHwMiaFault | Warning | Warning | HVP_w020 - Shunt HW Mia Fault Tesla warning code in the High Voltage Protection (HVP) module. Contactor state is open |
| HVP_w021 HVP_w021_PyroMiaFault | Warning | Warning | HVP_w021 - Pyro Mia Fault Tesla warning code in the High Voltage Protection (HVP) module related to pyro mia fault. |
| HVP_w022 HVP_w022_PyroMiaWarning | Warning | Warning | HVP_w022 - Pyro Mia Warning Tesla warning code in the High Voltage Protection (HVP) module related to pyro mia warning. |
| HVP_w024 HVP_w024_Supply12vFault | Warning | Warning | HVP_w024 - Supply12v Fault Tesla warning code in the High Voltage Protection (HVP) module related to supply12v fault. |
| HVP_w025 HVP_w025_VerSupplyFault | Warning | Warning | HVP_w025 - Ver Supply Fault Tesla warning code in the High Voltage Protection (HVP) module related to ver supply fault. |
| HVP_w026 HVP_w026_HvilFault | Warning | Warning | HVP_w026 - Hvil Fault Tesla warning code in the High Voltage Protection (HVP) module. The HVIL is intact |
| HVP_w027 HVP_w027_BmsMiaOnHvsFault | Warning | Warning | HVP_w027 - BMS Mia On Hvs Fault Tesla warning code in the High Voltage Protection (HVP) module related to bms mia on hvs fault. |
| HVP_w028 HVP_w028_PackVoltMismatchFault | Warning | Warning | HVP_w028 - Pack Volt Mismatch Fault Tesla warning code in the High Voltage Protection (HVP) module. Warns if the pack voltage doesn't match approximately with sum of brick voltages The pack voltage doesn't match approximately with sum of brick voltages The pack voltage match approximately with sum of brick voltages The contactors may not be allowed to close Alerts if PyroLeakTest pyro diagnostic has cross warning threshold PyroLeakTest sees an Aout outside of 15% tolerance when measuring leakage Customer Facing text to seek service immediately Warns if the BMS node is mia on HVS CAN The BMS node is mia on HVS CAN The BMS node is not mia on HVS CAN Warn if FC contactors are forced open |
| HVP_w029 HVP_w029_EnsMiaFault | Warning | Warning | HVP_w029 - Ens Mia Fault Tesla warning code in the High Voltage Protection (HVP) module. Pack contactor state is open |
| HVP_w030 HVP_w030_PackPosCtrArcFault | Warning | Warning | HVP_w030 - Pack Pos Ctr Arc Fault Tesla warning code in the High Voltage Protection (HVP) module related to pack pos ctr arc fault. |
| HVP_w031 HVP_w031_packNegCtrArcFault | Warning | Warning | HVP_w031 - pack Neg Ctr Arc Fault Tesla warning code in the High Voltage Protection (HVP) module related to pack neg ctr arc fault. |
| HVP_w032 HVP_w032_ShuntHwAndBmsMiaFault | Warning | Warning | HVP_w032 - Shunt HW And BMS Mia Fault Tesla warning code in the High Voltage Protection (HVP) module. Warns if the HVP detectes both BMS and Shunt MIA while pack contactors closed If the HVP detectes both BMS and Shunt MIA while pack contactors closed When either BMS or Shunt is not mia Alerts if the HV pyro fuse is blown One of many critical HVP or BMS alert, log data contains the reason Clears after a pyro loop is completed and meets expectation Warns if the shunt current reading is not avaialble The shunt current reading is not avaialble The shunt current reading is avaialble Current readings are not avaialble |
| HVP_w033 HVP_w033_fcContHwFault | Warning | Warning | HVP_w033 - fc Cont HW Fault Tesla warning code in the High Voltage Protection (HVP) module related to fc cont hw fault. |
| HVP_w034 HVP_w034_cpMismatchFault | Warning | Warning | HVP_w034 - cp Mismatch Fault Tesla warning code in the High Voltage Protection (HVP) module. The CP version mismatch The CP version match expected |
| HVP_w035 HVP_w035_packContHwFault | Warning | Warning | HVP_w035 - pack Cont HW Fault Tesla warning code in the High Voltage Protection (HVP) module related to pack cont hw fault. |
| HVP_w036 HVP_w036_pyroFuseBlown | Warning | Warning | HVP_w036 - pyro Fuse Blown Tesla warning code in the High Voltage Protection (HVP) module related to pyro fuse blown. |
| HVP_w037 HVP_w037_pyroFuseFailedToBlow | Warning | Warning | HVP_w037 - pyro Fuse Failed To Blow Tesla warning code in the High Voltage Protection (HVP) module. HV is disconnected |
| HVP_w038 HVP_w038_CpilFault | Warning | Warning | HVP_w038 - Cpil Fault Tesla warning code in the High Voltage Protection (HVP) module. The CPIL loop is complete |
| HVP_w039 HVP_w039_PackContactorFellOpen | Warning | Warning | HVP_w039 - Pack Contactor Fell Open Tesla warning code in the High Voltage Protection (HVP) module. Warn if a pack contactor falls open during closed state Warns if the ENS line is not connected to HVC The ENS line is not connected to HVC ENS idle signal is detected on ENS line The crash signal may not be detected by HVP |
| HVP_w040 HVP_w040_FcContactorFellOpen | Warning | Warning | HVP_w040 - Fc Contactor Fell Open Tesla warning code in the High Voltage Protection (HVP) module related to fc contactor fell open. |
| HVP_w041 HVP_w041_packCtrCloseBlocked | Warning | Warning | HVP_w041 - pack Ctr Close Blocked Tesla warning code in the High Voltage Protection (HVP) module related to pack ctr close blocked. |
| HVP_w042 HVP_w042_fcCtrCloseBlocked | Warning | Warning | HVP_w042 - fc Ctr Close Blocked Tesla warning code in the High Voltage Protection (HVP) module related to fc ctr close blocked. |
| HVP_w043 HVP_w043_packContactorForceOpen | Warning | Warning | HVP_w043 - pack Contactor Force Open Tesla warning code in the High Voltage Protection (HVP) module. Warn if pack contactors are forced open Warns if the BMS node is mia on HVI CAN The BMS node is mia on HVI CAN The BMS node is not mia on HVI CAN CAN messages are not received from BMS or other nodes on vehicle Warns if the HVP detects unintended loss of contactor control (V or I) The HVP detects loss of contactor power or coil current Contactor power or coil current is dropped below threshold The contactors opens unintentionally Warns if the voltage and temperature readings from primary BMB chain are mia The voltage and temperature readings from primary BMB chain are mia The voltage and temperature readings from primary BMB chain are not mia The secondary bmb chain is used exclusively for voltage and temperature protoection Alerts if any of the pyro diagnostic has failed or the pyro has blown One of many pyro diagnostic has failed including the pyro having blown Clears after all the diagnostic has passed Sorry, Contactors are not allowed to close. Warn if pack contactors are not allowed to close This meta alert will set if any of the reasons for preventing contactors to close (listed in this alert payload) are still present. This alert is always set with an accompanying alert that provides more specific information for the fault. Pack contactor blocking condition is cleared While this alert is set, HV contactors will not be able to close. This will prevent drive, charge and 12V support and eventually the 12V battery will be fully discharged and the vehicle will go offline. The PCS node is mia on HVS CAN The PCS node is not mia on HVS CAN CAN messages are not received from PCS node Warn if FC contactors are not allowed to close FC contactor blocking condition is cleared warn if shunt temerature exceeds high threshold value shunt temperature falls below low threshold value This is an indication that there could be a high impedance joint and prolonged time at this temp could affect the properties of the manganin Warn if the CPIL fault is detected Warns if the HVP detects series arc at FC contactor The HVP detects series arc at FC contactor The arc condition is not detected at FC contactor Warns if the CP version mismatch HVP cannot trust the CP indication, thus it is not safe to charge warn if if the thermistor sense line is not connected This is an indication that shunt thermistor is not in place/missing/bad Warns if the crash signal is detected by HVP The crash signal is detected by HVP The ENS idle siganl is detected on ENS line Warns if the low voltage battery is below minimum voltage threshold The low voltage battery is below minimum voltage threshold The low voltage battery is above minimum voltage threshold The contactors may not remain closed A brick voltage is below minimum voltage limit A brick voltage is below minimum voltage limit for X duration (in seconds) All brick voltages are above minimum voltage limit The conactors may open immdediately or pyro fuse may blow The Gateway node is mia on HVS CAN The Gateway node is not mia on HVS CAN CAN messages are not received from Gateway node Warns if the pack current (discharge or charge) is above max current limit. The pack current (discharge or charge) is above max current limit. The pack current (discharge or charge) is below max current limit. Warns if the pack discharge is above max discharge current limit The pack current is above max discharge current limit for X duration (in msec) The pack current is below max discharge current limit The contactors will open immdediately or pyro fuse may blow A pack module temperature is above maximum temperature limit A pack module temperature is above maximum temperature limit for X duration (in seconds) All pack module temperatures are below maximum temperature limit The HVP part number may be missing, incorrect, or unsupported The HVP is unable to initialize parameters related to PCBA configuration Warns if the HVP detects series arc at pack contactor The HVP detects series arc at pack contactor The arc condition is not detected at pack contactor A brick voltage is above maximum voltage limit All brick voltages are below maximum voltage limit |
| HVP_w044 HVP_w044_fcContactorForceOpen | Warning | Warning | HVP_w044 - fc Contactor Force Open Tesla warning code in the High Voltage Protection (HVP) module. FC contactor state is open |
| HVP_w045 HVP_w045_dcLinkOverVoltage | Warning | Warning | HVP_w045 - dc Link Over Voltage Tesla warning code in the High Voltage Protection (HVP) module related to dc link over voltage. |
| HVP_w046 HVP_w046_shuntOverTemperature | Warning | Warning | HVP_w046 - shunt Over Temperature Tesla warning code in the High Voltage Protection (HVP) module related to shunt over temperature. |
| HVP_w047 HVP_w047_passivePyroDeploy | Warning | Warning | HVP_w047 - passive Pyro Deploy Tesla warning code in the High Voltage Protection (HVP) module related to passive pyro deploy. |
| HVP_w049 HVP_w049_packCtrCloseFailed | Warning | Warning | HVP_w049 - pack Ctr Close Failed Tesla warning code in the High Voltage Protection (HVP) module related to pack ctr close failed. |
| HVP_w050 HVP_w050_fcCtrCloseFailed | Warning | Warning | HVP_w050 - fc Ctr Close Failed Tesla warning code in the High Voltage Protection (HVP) module related to fc ctr close failed. |
| HVP_w051 HVP_w051_shuntThermistorMia | Warning | Warning | HVP_w051 - shunt Thermistor Mia Tesla warning code in the High Voltage Protection (HVP) module related to shunt thermistor mia. |
| HVP_w053 HVP_w053_hvVoltageSensorRationality | Warning | Warning | HVP_w053 - HV Voltage Sensor Rationality Tesla warning code in the High Voltage Protection (HVP) module. Pack voltage differs from DC Link voltage too much with contactors closed Warn if DC-link voltage is above over voltage threshold while closing contactors Contactors closing will be aborted Warn if FC contactor enter to the BLOCKED state |
| HVP_w054 HVP_w054_swMissingConfigBlock | Warning | Warning | HVP_w054 - SW Missing Config Block Tesla warning code in the High Voltage Protection (HVP) module related to sw missing config block. |
| HVP_w055 HVP_w055_swMissingPartNumber | Warning | Warning | HVP_w055 - SW Missing Part Number Tesla warning code in the High Voltage Protection (HVP) module related to sw missing part number. |
| HVP_a003 HVP_a003_High_Voltage_Power_System_Faul | Critical | Alert | HVP_a003 - High Voltage Power System Fault Tesla alert code in the High Voltage Platform module. High Voltage Power System Fault |
| HVP_a009 HVP_a009_High_Voltage_Isolation_Fault_D | Critical | Alert | HVP_a009 - High Voltage Isolation Fault Detected Tesla alert code in the High Voltage Platform module. High Voltage Isolation Fault Detected |
| HVP_a010 HVP_a010_High_Voltage_System_Shutdown_I | Critical | Alert | HVP_a010 - High Voltage System Shutdown Initiated Tesla alert code in the High Voltage Platform module. High Voltage System Shutdown Initiated |