VCFRONT_a518 — LVBMS Fault MOS Open pack OV
Full alert identifier: VCFRONT_a518_LVBMSFault_MOS_Open_packOV
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 pack overvoltage condition.
Potential impact
The LV battery may be damaged and may be unable to support vehicle electrical systems.
Set condition
The LVBMS detects a pack overvoltage condition affecting the LV battery.
Clear condition
The LVBMS reports the pack overvoltage condition is resolved and internal protection transistor (MOSFET) has been requested closed again.
Signals to check
Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.
| Signal | Unit |
|---|---|
IBS Voltage
VCFRONT_
|
V |
Output Voltage At PCS
VCFRONT_
|
V |
Pack SOC
VCFRONT_
|
% |
Pack Voltage
VCFRONT_
|
V |
Target PCS Voltage
VCFRONT_
|
V |
| Signal | Unit |
|---|---|
Frunk Open
VCFRONT_
|
— |
Service Mode
VCFRONT_
|
— |
Vehicle Power State
VCFRONT_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCFRONT_a518.