Hybrid Battery Pack Deterioration
The battery management system detects that the high-voltage battery pack capacity has fallen below acceptable threshold based on charge/discharge tests and impedance measurement.
Affected components
- Hv battery
- Bms
Common causes
- High likelihood: Battery aged or damaged cells
- Medium likelihood: Persistent cell imbalance
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.