Diagnostics

Table of Contents

Faults

Faults #

Fault Lights #

GML – General Malfunction Light

MIL – Malfunction Indicator Light

(Powertrain Error)

Low Battery Power

HV Warning – High Voltage Warning

Overheating

Limp Mode #

Vehicle will be limited to roughly 20 MPH and have reduced motor torque. Limp mode is intended to get the vehicle and the driver to a safe place to stop and should not be driven in limp mode for extended periods of time.

Vehicle Disable #

If any faults cause a serious problem that may endanger the vehicles occupants or the car itself, the vehicle may be disabled. Level 1 disable (most common) turns the car off after it has come to a stop. Level 2 disable immediately turns the car off (ex. in the event of a wreck). Some faults may cause only the drive motor inverter to be disabled.

Download Excel File Below #

Fault-Descriptions Download

Fault Codes #

Fault Name	Brief Description	Troubleshooting	GML	MIL	Low Power	HV Warning	Overheat	Limp Mode	Disables Vehicle
ACCCommError	AC Compressor CAN Error		X
ACCFault	AC compressor General Fault		X
ACCOpnShrt	High voltage short		X
ACCOverCurr	AC compressor over current					X
ACCOverTemp	AC compressor over heating	If the AC is running, Make sure system is fully charged	X
ACCOverVolt	AC compressor voltage too high					X
ACCUnderVolt	AC compressor voltage too low					X
ACPlugTempSnsFlt	N/A
ACPressInpHi	AC pressure sensor voltage high	Check ac pressure sensor wiring	X
ACPressInpLo	AC pressure sensor voltage low	Check ac pressure sensor wiring	X
AmbientAirTempInpHi	Ambient air temp sensor high			X
AmbientAirTempInpLo	Ambient air temp sensor low			X
AmpereBMSBatt_Aux1MsgTimeout	CAN message timeout	Check CAN wiring to BMS		X					X
AmpereBMSBatt_Cell_DetailMsgTimeout	CAN message timeout	Check CAN wiring to BMS		X					X
AmpereBMSBatt_ConfigMsgTimeout	CAN message timeout	Check CAN wiring to BMS		X
AmpereBMSBatt_ContactorMsgTimeout	CAN message timeout	Check CAN wiring to BMS		X					X
AmpereBMSBatt_CurrentMsgTimeout	CAN message timeout	Check CAN wiring to BMS		X					X
AmpereBMSBatt_OCVMsgTimeout	CAN message timeout	Check CAN wiring to BMS		X					X
AmpereBMSBatt_Temp1MsgTimeout	CAN message timeout	Check CAN wiring to BMS		X					X
AmpereBMSBatt_Temp2MsgTimeout	CAN message timeout	Check CAN wiring to BMS		X					X
AmpereBMSBatt_V_DetailMsgTimeout	CAN message timeout	Check CAN wiring to BMS		X					X
AmpereBMSBatt_VoltageMsgTimeout	CAN message timeout	Check CAN wiring to BMS		X					X
AmpereBMSLifetime_StatsMsgTimeout	CAN message timeout	Check CAN wiring to BMS	X
APP1InpHi	Throttle pedal potentiometer voltage high			X
APP1InpLo	Throttle pedal potentiometer voltage low			X
APP2InpHi	Throttle pedal potentiometer voltage high			X
APP2InpLo	Throttle pedal potentiometer voltage low			X
APPXChk	disagreement between throttle potentiometers	Check wiring + replace		X
BattCellTempAvgHi	Battery average temperature is high	Check cooling system + approved conditions		RED			X	X
BattCellTempAvgLo	Battery average temperature is low	Check cooling system + approved conditions + heater		X
BattCellTempMnLo	Min battery temp low	Check battery heater		X
BattCellTempMxHi	Max battery temp high	Check cooling system + approved conditions					X
BattCellTempMxHiLv1	Max battery temp very high	Check cooling system + approved conditions		RED				X
BattCellTempMxHiLv2	Max battery temp critically high	Check cooling system + approved conditions				X			X
BattCellVoltMnLo	Min battery voltage low	Check with ampere EV				X			X
BattCellVoltMxHi	Max battery voltage high	Check with ampere EV				X			X
BattCurrHi	Battery current draw is higer than allowed	Check HV wiring, check with ampere ev				X			Level 2
BattFault	General Fault			X
BattHeaterOpnShrt	Battery heater circuit open	Check VCU wiring		X
BattHtrCANTimeout	CAN timeout		X
BattHtrCoreShort	Battery heater core short			X		X
BattHtrDrvVoltAb	Battery Heater 12 volt signal abnormal		X	X
BattHtrFault	Battery heater general fault		X
BattHtrHighVoltAb	Battery heater high voltage abnormal			X		X
BattHtrHighVoltRev	Battery heater high voltage reversed			X		X
BattHtrIGBTBrkdwn	Battery heater temp sensor failing			X
BattHtrIGBTOverTemp	Battery heater temp sensor over heating			X
BattHtrIGBTTempSnsOpn	Battery heater temp sensor circuit open
BattHtrIGBTTempSnsShort	Battery heater temp sensor short
BattHtrLowFlow	Battery heater not flowing enough water	Check water pump and coolant hoses
BattHtrOutTempSnsOpen	Battery heater out temp sensor open circuit
BattHtrOutTempSnsShort	Battery heater out temp sensor short
BattHtrOverCurr	Battery heater current is higher than allowed					X
BattHtrOverTemp	Battery heater over heat
BattHtrRoadOpen	Battery heater PTC failure
BattHVILFault	Battery High Voltage Interlock fault	Check module specific faults + wiring				X			Level 2
BattLowSOC	Battery level low
BattLowVolt	Battery voltage low			RED				X	X
BattPmpCommFail	CAN message fail		X
BattPmpDryRunProtec	Battery pump dry	Check coolant system	X
BattPmpFault	Battery pump general fault			X
BattPmpHBSHHBSH_151A80_ ResponseMsgTimeout	CAN message timeout		X
BattPmpLockedRotor	Battery pump rotor locked		X
BattPmpOverVolt	Battery pump voltage too high		X
BattPmpOvrCurr	Battery pump current higher than allowed		X
BattPmpTempProtec	Battery pump tempature too high		X
BattPmpUnderVolt	Battery pump voltage too low		X
BattWakeOpnShrt	Battery wake circuit open	Check VCU wiring		X
BattWPTCTransmitMsgTimeout	CAN message timeout		X
BenlingECC_ResponseMsgTimeout	AC CAN message timeout		X
BM_PKP_TX_message1MsgTimeout	Shifter CAN message timeout
BM_PKP_TX_message249MsgTimeout	Shifter CAN message timeout		X
BrkLightOpnShrt	Brake light circuit open	Check VCU wiring	X
BrkVacuumPmpOpnShrt	Brake vacuum pump circuit open	Check VCU wiring		X
BrkVacuumPressInpHi	Brake vacuum pressure input high			X
BrkVacuumPressInpLo	Brake vacuum pressure input low			X
CabHeaterHVACOpnShrt	Cabin heater circuit open	Check VCU wiring	X
CabHtrCANTimeout	Cabin heater CAN message timeout		X
CabHtrCoreShort	Cabin heater core short					X
CabHtrDrvVoltAB	Cabin heater 12 volt signal abnormal		X
CabHtrFault	Cabin heater general fault		X
CabHtrHighVoltAb	Cabin heater high voltage abnormal					X
CabHtrHighVoltRev	Cabin heater high voltage reversed	check wiring and ensure polarity of connector is correct				X
CabHtrlGBTBrkdwn	Cabin heater temp sensor failing
CabHtrlGBTOverTemp	Cabin heater temp sensor over heating
CabHtrlGBTTempSnsOpn	Cabin heater temp sensor circuit open
CabHtrlGBTTempSnsShort	Cabin heater temp sensor short
CabHtrLowFlow	Cabin heater not flowing enough water	Check water pumps and coolant hoses
CabHtrOutTempSnsOpen	Cabin heater output temp sensor circuit open
CabHtrOutTempSnsShort	Cabin heater output temp sensor short
CabHtrOverCurr	Cabin heater current is higher than allowed					X
CabHtrOverTemp	Cabin heater over heating
CabHtrRoadOpen	Cabin heater PTC failure
CabinWPTCTransmitMsgTimeout	Cabin heater CAN message timeout		X
CAN1BusPassive	passive wiring fault	Check for CAN wiring issues		X
CAN2BusPassive	passive wiring fault	Check for CAN wiring issues		X
CAN3BusPassive	passive wiring fault	Check for CAN wiring issues		X
ChgPortContFlt	?		X
ChgPortDCVoltHi	Charge port DC voltage too high
ChgPortDebouncedFlt	?
ChgPortDgInptFlt	?
ChgPortLckOutMtrFlt	Charge port lock out motor general fault		X
ChgrPortPlgLckOut0Flt	Charge port lock out motor fault 0
ChrgPortPlgLckOut1Flt	charge port lock out motor fault 1
DCChgCntrsOpnShrt	DC Charging contactors circuit open	Check VCU wiring		X		X
DCChgNegCntrXChk	Contactor feedback does not match comanded state	Check contactor wiring to CCS box, consult Ampere EV
DCChgPosCntrXChk	Contactor feedback does not match comanded state	Check contactor wiring to CCS box, consult Ampere EV
DCDCAbDevTemp	DC-DC converter is over heating	Check cooling system
DCDCAbVoltInput	DC-DC converter has abnormal voltage input from Junction Box	Check HV wiring
DCDCCommStatus	DC-DC converter CAN error
DCDCFault	DC-DC connector general fault			X		X
DCDCVoltOutOVRUNDR	DC-DC converter voltage out over or under expected voltage
DCDCWakeOpnShrt	DC-DC converter wake signal circuit open	Check VCU wiring		X
DCDCWorkStatus	DC-DC work status does not match comanded state
DCFC_ComToGridFlt	?
DCFC_GenFlt	?
DCPlugTempSns1Flt	CCS charge port over heat
DCPlugTempSns2Flt	CCS charge port over heat
DisplayDashControl_CCVS1MsgTimeout	CAN message timeout		X
DisplayDashControl_HVACMsgTimeout	CAN message timeout		X
DisplayDashControl_LCMDMsgTimeout	CAN message timeout		X
DisplayDashControl_VDCTRMsgTimeout	CAN message timeout		X
DisplayDashGUI_SettingsMsgTimeout	CAN message timeout		X
DisplayDashRlyOpnShrt	Display circuit open	Check VCU wiring	X
DrvInvtrCntrOpnShrt	Drive inverter contactor circuit open	Check VCU wiring		X
DrvIntvrTmpHi	Drive inverter temp high			X			X
DrvIntvrTmpHiLv1	Drive inverter temp very high			RED				X
DrvIntvrTmpHiLv2	Drive inverter temp critically high								Inverter Disable
DrvLampOpnShrt	N/A
DrvMtrTmpHi	Drive motor temp high			X			X
DrvMtrTmpHiLv1	Drive motor temp very high			RED				X
DrvMtrTmpHiLv2	Drive motor temp critically high								Inverter Disable
DrvMtrTrqHi	Torque output does not match request			X					Inverter Disable
DrvMtrTrqLo	Torque output does not match request			X
DRVPVoltHi	12 volt voltage high			X
DRVPVoltLo	12 volt voltage low			X
Estop	The Emergency stop was pressed		X						Level 2
Fan1OpnShrt	Fan 1 circuit open	Check VCU wiring		X
Fan2OpnShrt	Fan 2 circuit open	Check VCU wiring		X
HVBusIsoLoLevel1	Falls bellow 600					X			X
HVBusIsoLoLevel2	Falls bellow 500					X			Level 2
HVBusVoltHi	High voltage bus voltage high					X
HVBusVoltXChk	HV bus voltage does not match between battery and vehicle					X			X
HVDschgCntrOpnShrt	High voltage discharge contactor circuit open	Check VCU wiring		X		X
HVDschgCntrXChk	Contactor state does not match requested state					X
HVDschgFault	High voltage discharge general fault			X
HVIL1XChk	High voltage interlock Junction Box					X			Level 2
HVIL2XChk	High voltage Interlock CCS junction Box					X			Level 2
HVILOut1OpnShrt	N/A
HVILOut2OpnShrt	N/A
MainNegCntrOpnShrt	Main negative contactor circuit open	Check VCU to PDU wiring		X		X
MainNegCntrXChk	Main negative contactor does not match comanded state					X			X
MainPosCntrXChk	Main positive contactor does not match comanded state
MainPreChgCntrOpnShrt	Main pre-charge contactor circuit open	Check VCU to PDU wiring		X		X
MainPreChgFault	Main pre-charge general fault			X		X
Mod1HVIL1Fault	Module 1 High Voltage Interlock Fault Input connector
Mod1HVIL2Fault	Module 2 High Voltage Interlock Fault output connector
Mod1HVIL3Fault	N/A
Mod2HVIL1Fault	Module 2 High Voltage Interlock Fault Input connector
Mod2HVIL2Fault	Module 2 High Voltage Interlock Fault output connector
Mod2HVIL3Fault	N/A
Mod3HVIL1Fault	Module 3 High Voltage Interlock Fault Input connector
Mod3HVIL2Fault	Module 3 High Voltage Interlock Fault output connector
Mod3HVIL3Fault	N/A
Mod4HVIL1Fault	Module 4 High Voltage Interlock Fault Input connector
Mod4HVIL2Fault	Module 4 High Voltage Interlock Fault output connector
Mod4HVIL3Fault	N/A
Mod5HVIL1Fault	Module 5 High Voltage Interlock Fault Input connector
Mod5HVIL2Fault	Module 5 High Voltage Interlock Fault output connector
Mod5HVIL3Fault	N/A
Mod6HVIL1Fault	Module 6 High Voltage Interlock Fault Input connector
Mod6HVIL2Fault	Module 6 High Voltage Interlock Fault output connector
Mod6HVIL3Fault	N/A
MtrPmpCANTimeout	Motor pump CAN message timeout			X
MtrPmpFault	Motor pump general fault			RED				X
MtrPmpHBSHState_FeedbackMsgTimeout	Motor pump CAN message timeout			RED				X
MtrPmpIdleProtec	Motor pump Idle protection
MtrPmpLockedRotor	Motor pump rotor locked
MtrPmpOverTemp	Motor pump over heating
MtrPmpOverVolt	Motor pump voltage too high
MtrPmpOvrCurr	Motor pump current is higher than allowed
MtrPmpUnderVolt	Motor pump voltage too low
NtrlLampOpenShrt	N/A
057TeslaSDU057_DI_maxTMsgTimeout	Tesla motor CAN message timeout			X
057TeslaSDU057_DI_temperature2MsgTimeout	Tesla motor CAN message timeout			X
057TeslaSDU057_DI_temperatureMsgTimeout	Tesla motor CAN message timeout			X
057TeslaSDU057_generalStatesMsgTimeout	Tesla motor CAN message timeout			X
057TeslaSDU057_HVLVdataMsgTimeout	Tesla motor CAN message timeout			X
057TeslaSDU057_inputAckMsgTimeout	Tesla motor CAN message timeout			X
057TeslaSDU057_inConfigsMsgTimeout	Tesla motor CAN message timeout			X
057TeslaSDU057_powerData2MsgTimeout	Tesla motor CAN message timeout			X
057TeslaSDU057_powerDataMsgTimeout	Tesla motor CAN message timeout			X
057TeslaSDU057_speedDataMsgTimeout	Tesla motor CAN message timeout			X
057TeslaSDU057_torquePowerDataMsgTimeout	Tesla motor CAN message timeout			X
OffBoardChgrIsoFault	Off board charger isolation fault								X
OnBoardChgrCommState	On board charger CAN error
OnBoardChgrFault	On board charger general fault					X			Charge Disable
OnBoardChgrHardFail	On board charger hard fail
OnBoardChgrInptVolt	On board charger input voltage does not match expected voltage
OnBoardChgrOverTemp	On board charger is over heated
OnBoardChgrStartState	On board charger start state error
OvartechDCDC_InfoFrameMsgTimeout	CAN message timeout			X
OvartechOutputsMsgTimeout	CAN message timeout			X
PDU2Rlu8OpnShrt	PDU circuit open	Check VCU wiring	X
PrkLampOpnShrt	Park lamp circuit open	Check VCU wiring
PrkPawlOpnShrt	Park pawl circuit open	Check VCU wiring
PwrStrOutOpnShrt	Power steering circuit open	Check VCU wiring
RangeLowWarning	Range low	Charge Vehicle			X
RevLampOpnShrt	Reverse lamp circuit open	Check VCU wiring
RevLightOpnShrt	Reverse light circuit open	Check VCU wiring		X
SDUHVILFault	Tesla motor HVIL fault					X			Level 2
TeslaSDUMotor_Aux_TempMsgTimeout	Tesla motor CAN message timeout
TeslaSDUMotor_feedback_1MsgTimeout	Tesla motor CAN message timeout
TeslaSDUMotor_Feedback_2MsgTimeout	Tesla motor CAN message timeout
ThermistorACTempFlt	Charging port AC positive tempature fault			X					Charge Disable
ThermistorDCNegTempFlt	Charging port DC negative tempature fault			X					Charge Disable
ThermistorDCPosTempFlt	Charging port DC positive tempature fault			X					Charge Disable
VCCU_PWM_DutyCycleFlt	Vector
VCCU_PWM_FrequencyFlt	Vector
VCCUGenErrFlt	Vehicle charge control unit fault			X					Charge Disable
VCCUPilotWakeFlt	Vector
VectorVCVCCU_ChargeToVehicleMsgTimeout	Vector CAN message timeout			X
VectorVCVCCU_ControlPilotStatusMsgTimeout	Vector CAN message timeout			X
VectorVCVCCU_InletStatusMsgTimeout	Vector CAN message timeout			X
VectorVCVCCU_InletStatus2MsgTimeout	Vector CAN message timeout			X
VectorVCVCCU_PTC0MsgTimeout	Vector CAN message timeout			X
VectorVCVCCU_PTC1MsgTimeout	Vector CAN message timeout			X
VectorVCVCCU_PTC2MsgTimeout	Vector CAN message timeout			X
VectorVCVCCU_V2G_ EVSEPresentCurrentMsgTimeout	Vector CAN message timeout			X
VectorVCVCCU_V2G_EVSEStatusMsgTimeout	Vector CAN message timeout			X
VectorVCVCCU_V2G_StateMMsgTimeout	Vector CAN message timeout			X
VltSnsrChnErr	?
VltSnsrMeasErr	?
VltSnsrOvrCurr	?
VltSnsrSysErr	?
VoltageSensorIVT_Msg_Result_U3MsgTimeout	CAN message timeout
VoltageSensorOpnShrt	Voltage sensor circuit open	Check VCU wiring		X		X
XDRPVoltHi	voltage to VCU is too high			X
XDRPVoltInptHi	voltage to VCU is too high			X
XDRPVoltInptLo	voltage to VCU is too low			X