MyTeslaMate App

Signal Name	Description	Condition	Impact
HVP_w043_packContactorForceOpen	The High Voltage Processor (HVP) has forced the pack contactors open despite the pack contactor state being closed.	The HVP has forced the pack contactors open despite the pack contactor state being closed. Confirm specific set condition using alert log signal data.	The HVP opened the pack contactors. High voltage will be isolated to just the battery.
HVP_w042_fcCtrCloseBlocked	The High Voltage Processor (HVP) is blocking the Fast Charge (FC) contactors from closing.	The HVP is blocking the FC contactors from closing. Confirm specific set condition using alert log signal data.	The FC contactors are unable to close. The vehicle will not be able to DC charge.
HVP_w041_packCtrCloseBlocked	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.	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.
HVP_w040_FcContactorFellOpen	The High Voltage Processor (HVP) has detected a Fast Charge (FC) contactor has opened during a closed state.	The HVP has detected a voltage drop across the FC contactor, low contactor coil FC current, and the auxiliary switch is open. This indicates a FC contactor has opened despite being in a closed state.	The FC contactors will open. The vehicle may not be able to DC charge. The current charging session may be unexpectedly terminated as the FC contactors open.
HVP_w039_PackContactorFellOpen	The High Voltage Processor (HVP) has detected a pack contactor has opened during a closed state.	The HVP has detected a voltage drop across the contactor and low contactor coil current, indicating a pack contactor has opened despite being in a closed state.	The pack contactor state will appear as open. The vehicle powertrain may unexpectedly lose high voltage power under load.
HVP_w038_CpilFault	The High Voltage Processor (HVP) has detected the Charge Port HV Interlock Loop (CPIL) has a condition affecting functionality.	The HVP General Purpose Input/Output (GPIO) input has detected the CPIL has a condition affecting functionality.	The Fast Charge (FC) link will not be allowed to charge. The vehicle may not charge as expected, or at all.
HVP_w037_pyroFuseFailedToBlow	Alerts if the HV pyro fuse is blown.	One of many critical HVP or BMS alert, log data contains the reason	HV is disconnected
HVP_w036_pyroFuseBlown	Alerts if the HV pyro fuse is blown.	One of many critical HVP or BMS alert, log data contains the reason	HV is disconnected
HVP_w035_packContHwFault	Warns if the HVP detects unintended loss of contactor control (V or I).	The HVP detects loss of contactor power or coil current	The contactors opens unintentionally
HVP_w034_cpMismatchFault	Warns if the CP version mismatch.	The CP version mismatch	HVP cannot trust the CP indication, thus it is not safe to charge
HVP_w033_fcContHwFault	Warns if the HVP detects unintended loss of contactor control (V or I).	The HVP detects loss of contactor power or coil current	The contactors opens unintentionally
HVP_w032_ShuntHwAndBmsMiaFault	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	The pyro fuse will blow
HVP_w031_packNegCtrArcFault	The High Voltage Processor (HVP) detects a series arc at the negative pack contactor.	The HVP detects a series arc at the negative pack contactor.	The pyro fuse may blow. The vehicle may be unable to drive or charge.
HVP_w030_PackPosCtrArcFault	The High Voltage Processor (HVP) detects a series arc at the positive pack contactor.	The HVP detects a series arc at the positive pack contactor.	The pyro fuse may blow. The vehicle may be unable to drive or charge.
HVREX_a157_FcPosCtrOpenFailCurrentStillHigh	Positive contactor is expected to be open but HV current is still present. Possible weld detected.	Contactor state timed out of OPENING (and transitioned to AUX_MISMATCH) due to HV current not being low enough to open contactors.	The pyro fuse may be deployed.
HVP_w029_EnsMiaFault	Warns if the ENS line is not connected to HVC.	The ENS line is not connected to HVC	The crash signal may not be detected by HVP
HVP_w028_PackVoltMismatchFault	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 contactors may not be allowed to close
HVP_w027_BmsMiaOnHvsFault	Warns if the BMS node is mia on HVS CAN.	The BMS node is mia on HVS CAN	CAN messages are not received from BMS or other nodes on vehicle
HVP_w026_HvilFault	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
HVREX_a150_FcNegCtrFellOpenLowCoilCurrent	Negative contactor opened unexpectedly due to insufficient coil drive current.	Contactor state exited ECONOMIZED because coil current was too low.	Vehicle will stop charging.

HVP_w043_packContactorForceOpen

The High Voltage Processor (HVP) has forced the pack contactors open despite the pack contactor state being closed.

The HVP has forced the pack contactors open despite the pack contactor state being closed. Confirm specific set condition using alert log signal data.

The HVP opened the pack contactors. High voltage will be isolated to just the battery.

HVP_w042_fcCtrCloseBlocked

The High Voltage Processor (HVP) is blocking the Fast Charge (FC) contactors from closing.

The HVP is blocking the FC contactors from closing. Confirm specific set condition using alert log signal data.

The FC contactors are unable to close. The vehicle will not be able to DC charge.

HVP_w041_packCtrCloseBlocked

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.

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.

HVP_w040_FcContactorFellOpen

The High Voltage Processor (HVP) has detected a Fast Charge (FC) contactor has opened during a closed state.

The HVP has detected a voltage drop across the FC contactor, low contactor coil FC current, and the auxiliary switch is open. This indicates a FC contactor has opened despite being in a closed state.

The FC contactors will open. The vehicle may not be able to DC charge. The current charging session may be unexpectedly terminated as the FC contactors open.

HVP_w039_PackContactorFellOpen

The High Voltage Processor (HVP) has detected a pack contactor has opened during a closed state.

The HVP has detected a voltage drop across the contactor and low contactor coil current, indicating a pack contactor has opened despite being in a closed state.

The pack contactor state will appear as open. The vehicle powertrain may unexpectedly lose high voltage power under load.

HVP_w038_CpilFault

The High Voltage Processor (HVP) has detected the Charge Port HV Interlock Loop (CPIL) has a condition affecting functionality.

The HVP General Purpose Input/Output (GPIO) input has detected the CPIL has a condition affecting functionality.

The Fast Charge (FC) link will not be allowed to charge. The vehicle may not charge as expected, or at all.

HVP_w037_pyroFuseFailedToBlow

Alerts if the HV pyro fuse is blown.

One of many critical HVP or BMS alert, log data contains the reason

HV is disconnected

HVP_w036_pyroFuseBlown

Alerts if the HV pyro fuse is blown.

One of many critical HVP or BMS alert, log data contains the reason

HV is disconnected

HVP_w035_packContHwFault

Warns if the HVP detects unintended loss of contactor control (V or I).

The HVP detects loss of contactor power or coil current

The contactors opens unintentionally

HVP_w034_cpMismatchFault

Warns if the CP version mismatch.

The CP version mismatch

HVP cannot trust the CP indication, thus it is not safe to charge

HVP_w033_fcContHwFault

Warns if the HVP detects unintended loss of contactor control (V or I).

The HVP detects loss of contactor power or coil current

The contactors opens unintentionally

HVP_w032_ShuntHwAndBmsMiaFault

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

The pyro fuse will blow

HVP_w031_packNegCtrArcFault

The High Voltage Processor (HVP) detects a series arc at the negative pack contactor.

The HVP detects a series arc at the negative pack contactor.

The pyro fuse may blow. The vehicle may be unable to drive or charge.

HVP_w030_PackPosCtrArcFault

The High Voltage Processor (HVP) detects a series arc at the positive pack contactor.

The HVP detects a series arc at the positive pack contactor.

The pyro fuse may blow. The vehicle may be unable to drive or charge.

HVREX_a157_FcPosCtrOpenFailCurrentStillHigh

Positive contactor is expected to be open but HV current is still present. Possible weld detected.

Contactor state timed out of OPENING (and transitioned to AUX_MISMATCH) due to HV current not being low enough to open contactors.

The pyro fuse may be deployed.

HVP_w029_EnsMiaFault

Warns if the ENS line is not connected to HVC.

The ENS line is not connected to HVC

The crash signal may not be detected by HVP

HVP_w028_PackVoltMismatchFault

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 contactors may not be allowed to close

HVP_w027_BmsMiaOnHvsFault

Warns if the BMS node is mia on HVS CAN.

The BMS node is mia on HVS CAN

CAN messages are not received from BMS or other nodes on vehicle

HVP_w026_HvilFault

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

HVREX_a150_FcNegCtrFellOpenLowCoilCurrent

Negative contactor opened unexpectedly due to insufficient coil drive current.

Contactor state exited ECONOMIZED because coil current was too low.

Vehicle will stop charging.