MyTeslaMate App

Signal Name	Description	Condition	Impact
HVREX_a004_MissingPartNumber	Incorrect, missing, or unsupported board part number programmed	ECU detects an unexpected board part number	ECU is unable to initialize parameters related to printed circuit board assembly (PCBA) configuration
HVREX_a003_MissingConfigParameter	Incorrect or Missing calibration block entries programmed	ECU config block may be missing, incorrect, or unsupported	ECU is unable to initialize configuration parameters
HVP_w062_BmbOtpConfigError	A Battery Monitoring Board (BMB) device has an unrecognized One-Time-Programmable (OTP) memory contents	Any BMB device in the daisy chain contains an unrecognized OTP checksum	May indicate a BMB device hardware issue which could result in unreliable measurement data
HVP_w060_StackVoltageSense	Indicates a mismatch between a Battery Monitoring Board (BMB) stack voltage and the sum of its brick voltages	Any BMB has a difference between the stack voltage and the sum of its brick voltages that has deviated outside the in-bounds threshold	Other BMB voltage signals will be substituted given that voltage sensing is unreliable
HVP_w058_BmbVrefBad	Indicates a Battery Monitoring Board (BMB) reference voltage has continuously been out of bounds	Any BMB reference voltage has continuously deviated outside the in-bounds threshold of the nominal voltage	Other BMB voltage signals will be substituted given the reference voltage is unreliable
HVP_w055_swMissingPartNumber	Incorrect or Missing part number programmed	The HVP part number may be missing, incorrect, or unsupported	The HVP is unable to initialize parameters related to PCBA configuration
HVREX_a201_ModuleTempSenseFault	HVBATT detects that any module in the battery pack cannot measure temperature properly.	A battery monitoring board (BMB) detects that all of the thermistors on a module are BAD or SNA.	Inability to charge, drive, or support the low voltage (LV) system.
HVREX_a017_ShuntAsicCalNotUsed	The programmed shunt application-specific integrated circuit (ASIC) calibration is not being used for high voltage (HV) current sensing. The default shunt ASIC gain will be used and current measurement accuracy may be reduced.	The stored shunt ASIC gain is invalid or the written gain is outside the allowed tolerance.	The default shunt ASIC gain will be used for high voltage (HV) current sensing. Shunt current measurement accuracy may be reduced.
HVP_w068_shuntUnexpectedThermistor	The High Voltage Processor (HVP) detects the shunt thermistor is present when the HVP calibration block has shunt Temperature Coefficients of Resistance (TCRs) for a shunt without a thermistor.	A shunt thermistor is detected when the shunt TCRs in the HVP calibration block indicate a shunt thermistor should not be present.	The High Voltage Controller (HVC) will measure the pack current less accurately affecting algorithms such as pack energy estimation. No immediate vehicle functional impact.
HVP_w067_HvilCalNodeMismatch	The High Voltage Interlock Loop (HVIL) type in the High Voltage Processor's (HVP) calibration block or firmware file is mismatched with the expected HVIL node count defined in the numberHVILNodes gateway configuration.	The HVIL type determined by the HVP is mismatched with the numberHVILNodes gateway configuration.	Contactors will open and may remain open while not in the drive state.
HVP_w052_BmbStatusRegError	A Battery Monitoring Board (BMB) device status register error indication has been detected	Any BMB device in the daisy chain reports any of the monitored error indicators	May indicate a BMB device hardware issue which could result in unreliable measurement data
HVREX_a158_FcNegCtrOpenFailCurrentStillHigh	Negative 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_w053_hvVoltageSensorRationality	The High Voltage (HV) battery pack voltage significantly differs from the DC Link voltage while the contactors are closed.	The difference between the HV battery pack and DC Link voltages exceeds the given threshold.	The HV voltage sense circuit does not operate as expected.
HVP_w051_shuntThermistorMia	The High Voltage Processor (HVP) has detected the shunt thermistor sense line is Missing in Action (MIA), indicating it may not be connected to the High Voltage Controller (HVC).	The HVP has detected the shunt thermistor sense line is MIA, indicating it may not be connected to the HVC. The shunt thermistor may be not in place, missing, or gone bad.	The shunt thermistor may have a condition affecting functionality. The thermistor may not detect shunt temperature as expected.
HVP_w050_fcCtrCloseFailed	The Fast Charge (FC) contactor is unable to close. This results in the inability to Fast Charge.	The FC contactor is unable to close.	The vehicle is unable to fast charge, but AC charging is not impacted.
HVP_w049_packCtrCloseFailed	The High Voltage Processor (HVP) has detected a pack contactor has entered blocked state.	The HVP has detected a pack contactor has entered blocked state. The HVP may have timed out trying to close the pack contactor.	The pack contactors did not close. The High Voltage System may not function as expected.
HVP_w048_swUnsupportedBmbAsicType	Unsupported battery monitoring board (BMB) application-specific integrated circuit (ASIC) configuration.	The calibration block is configurated for a BMB ASIC type that is not supported.	The high voltage processor may be unable to obtain battery pack measurements.
HVP_w047_passivePyroDeploy	The High Voltage Processor (HVP) hardware circuit board has detected and triggered the pyrotechnic fuse on the battery. The High Voltage (HV) system has been isolated to the battery.	The HVP hardware circuit board has detected and triggered the pyrotechnic fuse on the battery. The HV system has been isolated to the battery.	The HVP pyrotechnic fuse has triggered. High voltage has been isolated to the HV battery.
HVP_w046_shuntOverTemperature	The High Voltage Processor (HVP) has detected the shunt temperature has exceeded the high threshold value.	The HVP has detected the shunt temperature has exceeded the high threshold value. There may be a high impedance joint.	There may be a high impedance joint. After a prolonged time at a high temperature, the properties of the manganin may be impacted.
HVP_w045_dcLinkOverVoltage	The High Voltage Processor (HVP) has detected the DC-link voltage has exceeded the voltage mismatch threshold while closing the pack contactors.	The HVP has detected the positive and negative DC-link voltage has exceeded the voltage mismatch threshold while closing the pack contactors.	The HVP will stop closing the pack contactors. The pack contactors will open.

HVREX_a004_MissingPartNumber

Incorrect, missing, or unsupported board part number programmed

ECU detects an unexpected board part number

ECU is unable to initialize parameters related to printed circuit board assembly (PCBA) configuration

HVREX_a003_MissingConfigParameter

Incorrect or Missing calibration block entries programmed

ECU config block may be missing, incorrect, or unsupported

ECU is unable to initialize configuration parameters

HVP_w062_BmbOtpConfigError

A Battery Monitoring Board (BMB) device has an unrecognized One-Time-Programmable (OTP) memory contents

Any BMB device in the daisy chain contains an unrecognized OTP checksum

May indicate a BMB device hardware issue which could result in unreliable measurement data

HVP_w060_StackVoltageSense

Indicates a mismatch between a Battery Monitoring Board (BMB) stack voltage and the sum of its brick voltages

Any BMB has a difference between the stack voltage and the sum of its brick voltages that has deviated outside the in-bounds threshold

Other BMB voltage signals will be substituted given that voltage sensing is unreliable

HVP_w058_BmbVrefBad

Indicates a Battery Monitoring Board (BMB) reference voltage has continuously been out of bounds

Any BMB reference voltage has continuously deviated outside the in-bounds threshold of the nominal voltage

Other BMB voltage signals will be substituted given the reference voltage is unreliable

HVP_w055_swMissingPartNumber

Incorrect or Missing part number programmed

The HVP part number may be missing, incorrect, or unsupported

The HVP is unable to initialize parameters related to PCBA configuration

HVREX_a201_ModuleTempSenseFault

HVBATT detects that any module in the battery pack cannot measure temperature properly.

A battery monitoring board (BMB) detects that all of the thermistors on a module are BAD or SNA.

Inability to charge, drive, or support the low voltage (LV) system.

HVREX_a017_ShuntAsicCalNotUsed

The programmed shunt application-specific integrated circuit (ASIC) calibration is not being used for high voltage (HV) current sensing. The default shunt ASIC gain will be used and current measurement accuracy may be reduced.

The stored shunt ASIC gain is invalid or the written gain is outside the allowed tolerance.

The default shunt ASIC gain will be used for high voltage (HV) current sensing. Shunt current measurement accuracy may be reduced.

HVP_w068_shuntUnexpectedThermistor

The High Voltage Processor (HVP) detects the shunt thermistor is present when the HVP calibration block has shunt Temperature Coefficients of Resistance (TCRs) for a shunt without a thermistor.

A shunt thermistor is detected when the shunt TCRs in the HVP calibration block indicate a shunt thermistor should not be present.

The High Voltage Controller (HVC) will measure the pack current less accurately affecting algorithms such as pack energy estimation. No immediate vehicle functional impact.

HVP_w067_HvilCalNodeMismatch

The High Voltage Interlock Loop (HVIL) type in the High Voltage Processor's (HVP) calibration block or firmware file is mismatched with the expected HVIL node count defined in the numberHVILNodes gateway configuration.

The HVIL type determined by the HVP is mismatched with the numberHVILNodes gateway configuration.

Contactors will open and may remain open while not in the drive state.

HVP_w052_BmbStatusRegError

A Battery Monitoring Board (BMB) device status register error indication has been detected

Any BMB device in the daisy chain reports any of the monitored error indicators

May indicate a BMB device hardware issue which could result in unreliable measurement data

HVREX_a158_FcNegCtrOpenFailCurrentStillHigh

Negative 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_w053_hvVoltageSensorRationality

The High Voltage (HV) battery pack voltage significantly differs from the DC Link voltage while the contactors are closed.

The difference between the HV battery pack and DC Link voltages exceeds the given threshold.

The HV voltage sense circuit does not operate as expected.

HVP_w051_shuntThermistorMia

The High Voltage Processor (HVP) has detected the shunt thermistor sense line is Missing in Action (MIA), indicating it may not be connected to the High Voltage Controller (HVC).

The HVP has detected the shunt thermistor sense line is MIA, indicating it may not be connected to the HVC. The shunt thermistor may be not in place, missing, or gone bad.

The shunt thermistor may have a condition affecting functionality. The thermistor may not detect shunt temperature as expected.

HVP_w050_fcCtrCloseFailed

The Fast Charge (FC) contactor is unable to close. This results in the inability to Fast Charge.

The FC contactor is unable to close.

The vehicle is unable to fast charge, but AC charging is not impacted.

HVP_w049_packCtrCloseFailed

The High Voltage Processor (HVP) has detected a pack contactor has entered blocked state.

The HVP has detected a pack contactor has entered blocked state. The HVP may have timed out trying to close the pack contactor.

The pack contactors did not close. The High Voltage System may not function as expected.

HVP_w048_swUnsupportedBmbAsicType

Unsupported battery monitoring board (BMB) application-specific integrated circuit (ASIC) configuration.

The calibration block is configurated for a BMB ASIC type that is not supported.

The high voltage processor may be unable to obtain battery pack measurements.

HVP_w047_passivePyroDeploy

The High Voltage Processor (HVP) hardware circuit board has detected and triggered the pyrotechnic fuse on the battery. The High Voltage (HV) system has been isolated to the battery.

The HVP hardware circuit board has detected and triggered the pyrotechnic fuse on the battery. The HV system has been isolated to the battery.

The HVP pyrotechnic fuse has triggered. High voltage has been isolated to the HV battery.

HVP_w046_shuntOverTemperature

The High Voltage Processor (HVP) has detected the shunt temperature has exceeded the high threshold value.

The HVP has detected the shunt temperature has exceeded the high threshold value. There may be a high impedance joint.

There may be a high impedance joint. After a prolonged time at a high temperature, the properties of the manganin may be impacted.

HVP_w045_dcLinkOverVoltage

The High Voltage Processor (HVP) has detected the DC-link voltage has exceeded the voltage mismatch threshold while closing the pack contactors.

The HVP has detected the positive and negative DC-link voltage has exceeded the voltage mismatch threshold while closing the pack contactors.

The HVP will stop closing the pack contactors. The pack contactors will open.

Alerts

Alerts