Hybrid/EV Battery Contactor Control Supply Circuit/High
The supply circuit for the hybrid battery contactor control reports a high condition. Contactor coils may not energise as expected.
Affected components
- Hybrid battery contactor control supply
- Wiring harness
- Bms
Common causes
- High likelihood: Supply wire shorted to B+
- Medium likelihood: Alternator regulator overvoltage
- Low likelihood: Pack cell imbalance approaching service threshold
Possible symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
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.