MyTeslaMate App

Signal Name	Description	Condition	Impact
VCFRONT_a417_TLVBMS_BrickOverVoltageFault	A Low Voltage (LV) battery pack brick voltage is greater than the over voltage limit.	A battery pack brick voltage is above the over voltage limit for longer than expected.	LV battery may be electrically disconnected from the LV system. Vehicle may be unable to drive.
VCFRONT_a508_bridgeEFuseLoadShed	Electrical current flowing through the Bridge eFuse has equaled or exceeded 120A. The Bridge eFuse circuit may open (trip) if low voltage (LV) electrical system loads are not reduced. The front vehicle controller (VCFRONT) is shedding some vehicle electrical loads by cutting power to less essential electronic control units (ECUs).	The Bridge eFuse current value equals or exceeds 120A for 100 milliseconds.	Some convenience features will be unavailable as VCFRONT limits LV electrical system current draw by cutting power to some electronic control units (ECUs).
VCFRONT_a347_iboosterFastTripSlope	The front vehicle controller (VCFRONT) detects the electrical current flowing through the electromechanical brake booster (iBooster) eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.	The iBooster eFuse current slope value equals or exceeds 120A per millisecond.	The eFuse circuit may open (trip), interrupting power supply to iBooster and making brake functionality limited.
VCFRONT_a348_espFastTripSlope	The front vehicle controller (VCFRONT) detects the electrical current flowing through the electronic stability program (ESP) eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.	The ESP eFuse current slope value equals or exceeds 120A per millisecond.	The eFuse circuit may open (trip), interrupting power supply to ESP and making vehicle stability control limited.
VCFRONT_a349_vbatFusedFastTripSlope	The front vehicle controller (VCFRONT) detects the electrical current flowing through the fused high current circuit eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.	The fused high current circuit eFuse current slope value equals or exceeds 120A per millisecond.	The eFuse circuit may open (trip), interrupting power supply to the coolant pumps and condenser fan. HVAC cabin cooling (air conditioning) and powertrain performance may be limited.
VCFRONT_a346_epas3sFastTripSlope	The front vehicle controller (VCFRONT) detects the electrical current flowing through the secondary electronic power assisted steering (EPAS3S) eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.	The EPAS3S eFuse current slope value equals or exceeds 120A per millisecond.	The eFuse circuit may open (trip), interrupting power supply to EPAS3S and making power steering limited or unavailable.
VCFRONT_a438_TLVBMS_PackOverTemperatureFault	A Low Voltage (LV) battery pack module temperature is above the expected temperature limit.	A battery pack module temperature is above the temperature limit for longer than expected.	Vehicle may be unable to drive.
VCFRONT_a350_espValveCurrentSenseSaturated	The current flowing through the electronic stability program (ESP) valve eFuse circuit exceeds normal operating range and cannot be measured. The ESP valve eFuse circuit may be open (tripped).	The ESP valve eFuse detects electrical current flow exceeding normal (expected operating) range, causing the ESP valve eFuse circuit to open (trip).	Vehicle stability control may be limited or unavailable.
VCFRONT_a341_vbatFusedFastTripOCMax	The front vehicle controller (VCFRONT) detects the electrical current flowing through the fused high current circuit eFuse has equaled or exceeded 100A during the previous 10 milliseconds.	The fused high current circuit eFuse current value equals or exceeds 100A during the previous 10 milliseconds.	The eFuse circuit may open (trip), interrupting power supply to the coolant pumps and condenser fan. HVAC cabin cooling (air conditioning) and powertrain performance may be limited.
VCFRONT_a333_vbatFusedSlowTripOC	The front vehicle controller fused high current circuit eFuse current average current value over the last second was > 60A.	60A average eFuse current within last second.	The eFuse may have tripped.
VCFRONT_a342_vcleftFastTripSlope	The front vehicle controller (VCFRONT) detects the electrical current flowing through the left vehicle controller (VCLEFT) eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.	The VCLEFT eFuse current slope value equals or exceeds 120A per millisecond.	The eFuse circuit may open (trip), interrupting power supply to VCLEFT and making VCLEFT unavailable.
VCFRONT_a331_iboosterSlowTripOC	The braking assist eFuse current average current value over the last second was > 25A.	25A average eFuse current within last second.	The eFuse may have tripped.
VCFRONT_a332_espSlowTripOC	The stability controller eFuse current average current value over the last second was > 40A.	40A average eFuse current within last second.	The eFuse may have tripped.
VCFRONT_a343_vcrightFastTripSlope	The front vehicle controller (VCFRONT) detects the electrical current flowing through the right vehicle controller (VCRIGHT) eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.	The VCRIGHT eFuse current slope value equals or exceeds 120A per millisecond.	The eFuse circuit may open (trip), interrupting power supply to VCRIGHT and making VCRIGHT unavailable.
VCFRONT_a344_pcsFastTripSlope	The front vehicle controller (VCFRONT) detects the electrical current flowing through the power conversion system (PCS) eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.	The PCS eFuse current slope value equals or exceeds 120A per millisecond.	The eFuse circuit may open (trip), interrupting low voltage power supply to the PCS. This could make PCS functions limited or unavailable, and could interrupt precharging of the high voltage (HV) bus .
VCFRONT_a330_epas3sSlowTripOC	The secondary power steering eFuse current average current value over the last second was > 100A.	100A average eFuse current within last second.	The eFuse may have tripped.
VCFRONT_a351_emergencyFrunkButtonPressIgnored	Frunk interior emergency release button press has been detected, but the frunk was not opened because vehicle was in motion.	Frunk emergency interior release button press detected while the vehicle is in motion.	Possible occupant or object inside the frunk pressing the interior release button.
VCFRONT_a328_pcsSlowTripOC	The power conversion system eFuse current average current value over the last second was > 150A.	150A average eFuse current within last second.	The eFuse may have tripped.
VCFRONT_a355_coolantSysLockout	The vehicle controller detects the vehicle is not factory gated or the coolant is not filled, causing the coolant pumps to turn off and the coolant valve to be in Series or No Bypass mode.	May set due to any of the following: (1) vehicle is not factory gated; (2) coolant is not filled; (3) coolant fill / drain routine is active.	Cabin climate control system air conditioning may be limited or unavailable. Powertrain performance may be limited.
VCFRONT_a423_TLVBMS_BrickUnderVoltageFault	A Low Voltage (LV) battery brick voltage is less than the under voltage limit.	A battery pack brick voltage is below the under voltage limit for longer than expected.	Drive may be blocked

VCFRONT_a417_TLVBMS_BrickOverVoltageFault

A Low Voltage (LV) battery pack brick voltage is greater than the over voltage limit.

A battery pack brick voltage is above the over voltage limit for longer than expected.

LV battery may be electrically disconnected from the LV system. Vehicle may be unable to drive.

VCFRONT_a508_bridgeEFuseLoadShed

Electrical current flowing through the Bridge eFuse has equaled or exceeded 120A. The Bridge eFuse circuit may open (trip) if low voltage (LV) electrical system loads are not reduced. The front vehicle controller (VCFRONT) is shedding some vehicle electrical loads by cutting power to less essential electronic control units (ECUs).

The Bridge eFuse current value equals or exceeds 120A for 100 milliseconds.

Some convenience features will be unavailable as VCFRONT limits LV electrical system current draw by cutting power to some electronic control units (ECUs).

VCFRONT_a347_iboosterFastTripSlope

The front vehicle controller (VCFRONT) detects the electrical current flowing through the electromechanical brake booster (iBooster) eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.

The iBooster eFuse current slope value equals or exceeds 120A per millisecond.

The eFuse circuit may open (trip), interrupting power supply to iBooster and making brake functionality limited.

VCFRONT_a348_espFastTripSlope

The front vehicle controller (VCFRONT) detects the electrical current flowing through the electronic stability program (ESP) eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.

The ESP eFuse current slope value equals or exceeds 120A per millisecond.

The eFuse circuit may open (trip), interrupting power supply to ESP and making vehicle stability control limited.

VCFRONT_a349_vbatFusedFastTripSlope

The front vehicle controller (VCFRONT) detects the electrical current flowing through the fused high current circuit eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.

The fused high current circuit eFuse current slope value equals or exceeds 120A per millisecond.

The eFuse circuit may open (trip), interrupting power supply to the coolant pumps and condenser fan. HVAC cabin cooling (air conditioning) and powertrain performance may be limited.

VCFRONT_a346_epas3sFastTripSlope

The front vehicle controller (VCFRONT) detects the electrical current flowing through the secondary electronic power assisted steering (EPAS3S) eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.

The EPAS3S eFuse current slope value equals or exceeds 120A per millisecond.

The eFuse circuit may open (trip), interrupting power supply to EPAS3S and making power steering limited or unavailable.

VCFRONT_a438_TLVBMS_PackOverTemperatureFault

A Low Voltage (LV) battery pack module temperature is above the expected temperature limit.

A battery pack module temperature is above the temperature limit for longer than expected.

Vehicle may be unable to drive.

VCFRONT_a350_espValveCurrentSenseSaturated

The current flowing through the electronic stability program (ESP) valve eFuse circuit exceeds normal operating range and cannot be measured. The ESP valve eFuse circuit may be open (tripped).

The ESP valve eFuse detects electrical current flow exceeding normal (expected operating) range, causing the ESP valve eFuse circuit to open (trip).

Vehicle stability control may be limited or unavailable.

VCFRONT_a341_vbatFusedFastTripOCMax

The front vehicle controller (VCFRONT) detects the electrical current flowing through the fused high current circuit eFuse has equaled or exceeded 100A during the previous 10 milliseconds.

The fused high current circuit eFuse current value equals or exceeds 100A during the previous 10 milliseconds.

The eFuse circuit may open (trip), interrupting power supply to the coolant pumps and condenser fan. HVAC cabin cooling (air conditioning) and powertrain performance may be limited.

VCFRONT_a333_vbatFusedSlowTripOC

The front vehicle controller fused high current circuit eFuse current average current value over the last second was > 60A.

60A average eFuse current within last second.

The eFuse may have tripped.

VCFRONT_a342_vcleftFastTripSlope

The front vehicle controller (VCFRONT) detects the electrical current flowing through the left vehicle controller (VCLEFT) eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.

The VCLEFT eFuse current slope value equals or exceeds 120A per millisecond.

The eFuse circuit may open (trip), interrupting power supply to VCLEFT and making VCLEFT unavailable.

VCFRONT_a331_iboosterSlowTripOC

The braking assist eFuse current average current value over the last second was > 25A.

25A average eFuse current within last second.

The eFuse may have tripped.

VCFRONT_a332_espSlowTripOC

The stability controller eFuse current average current value over the last second was > 40A.

40A average eFuse current within last second.

The eFuse may have tripped.

VCFRONT_a343_vcrightFastTripSlope

The front vehicle controller (VCFRONT) detects the electrical current flowing through the right vehicle controller (VCRIGHT) eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.

The VCRIGHT eFuse current slope value equals or exceeds 120A per millisecond.

The eFuse circuit may open (trip), interrupting power supply to VCRIGHT and making VCRIGHT unavailable.

VCFRONT_a344_pcsFastTripSlope

The front vehicle controller (VCFRONT) detects the electrical current flowing through the power conversion system (PCS) eFuse has equaled or exceeded a current slope value (rate of change) of 120A per millisecond.

The PCS eFuse current slope value equals or exceeds 120A per millisecond.

The eFuse circuit may open (trip), interrupting low voltage power supply to the PCS. This could make PCS functions limited or unavailable, and could interrupt precharging of the high voltage (HV) bus .

VCFRONT_a330_epas3sSlowTripOC

The secondary power steering eFuse current average current value over the last second was > 100A.

100A average eFuse current within last second.

The eFuse may have tripped.

VCFRONT_a351_emergencyFrunkButtonPressIgnored

Frunk interior emergency release button press has been detected, but the frunk was not opened because vehicle was in motion.

Frunk emergency interior release button press detected while the vehicle is in motion.

Possible occupant or object inside the frunk pressing the interior release button.

VCFRONT_a328_pcsSlowTripOC

The power conversion system eFuse current average current value over the last second was > 150A.

150A average eFuse current within last second.

The eFuse may have tripped.

VCFRONT_a355_coolantSysLockout

The vehicle controller detects the vehicle is not factory gated or the coolant is not filled, causing the coolant pumps to turn off and the coolant valve to be in Series or No Bypass mode.

May set due to any of the following: (1) vehicle is not factory gated; (2) coolant is not filled; (3) coolant fill / drain routine is active.

Cabin climate control system air conditioning may be limited or unavailable. Powertrain performance may be limited.

VCFRONT_a423_TLVBMS_BrickUnderVoltageFault

A Low Voltage (LV) battery brick voltage is less than the under voltage limit.

A battery pack brick voltage is below the under voltage limit for longer than expected.

Drive may be blocked

Alerts

Alerts