Hybrid/EV Battery Interface Control Module B Performance
The hybrid battery interface control module B reports a performance fault. Internal self-tests fail or response time outside calibration.
Affected components
- Hybrid battery interface cm b
- Bms
Common causes
- High likelihood: Internal control module fault
- Medium likelihood: Communication with BMS degraded
- 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
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.