VCLEFT_a512 — LVBMS Fault MOS Open hardware OC

Full alert identifier: VCLEFT_a512_LVBMSFault_MOS_Open_hardwareOC

Alert description

The low voltage battery management system (LVBMS) reports it has opened the low voltage (LV) battery internal protection transistor (MOSFET) after detecting a hardware overcurrent condition.

Potential impact

The LV battery may be damaged and may be unable to support vehicle electrical systems.

Set condition

The LVBMS detects a hardware overcurrent condition affecting the LV battery.

Clear condition

The LVBMS reports the overcurrent condition is resolved and internal protection transistor (MOSFET) has been requested closed again.

Signals to check

These diagnostic fields are associated with VCLEFT_a512. Check the alert's Alert Log in Service Mode Plus for available values.

Signal	Unit
Frunk Open `VCLEFT_a512_frunkOpen`	—
Overcurrent Direction `VCLEFT_a512_overcurrentDirection` 0 INCONCLUSIVE 1 CHARGE 2 DISCHARGE	—
Pack Temperature `VCLEFT_a512_packTemperature`	C
Pack Voltage Interval Max `VCLEFT_a512_packVoltageIntervalMax`	V
Pack Voltage Interval Min `VCLEFT_a512_packVoltageIntervalMin`	V
Service Mode `VCLEFT_a512_serviceMode`	—
Sum Cell Voltage `VCLEFT_a512_sumCellVoltage`	V
Vehicle Power State `VCLEFT_a512_vehiclePowerState` 0 OFF 1 CONDITIONING 2 ACCESSORY 3 DRIVE	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCLEFT_a512.