Battery Charging System Negative Contactor A Control Circuit High
The negative contactor A of the battery charging system reports a control circuit high condition. HV charging path cannot be commanded reliably.
Affected components
- Bcs neg contactor a
- Wiring harness
- Bms
Common causes
- High likelihood: Wire shorted to B+
- Medium likelihood: Open coil
- Low likelihood: Connector pins corroded - high contact resistance
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.