Battery Charging System Negative Contactor B Control Circuit/Open
The negative contactor B of the battery charging system reports a control circuit/open condition. HV charging path cannot be commanded reliably.
Affected components
- Bcs neg contactor b
- Wiring harness
- Bms
Common causes
- High likelihood: Open in coil control wire
- Medium likelihood: Open contactor coil
- Low likelihood: Pin pushed back out of connector body
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.