Hybrid Battery Cooling System Performance
The BMS detects insufficient cooling performance for the HV battery, where pack temperature rise during operation exceeds expected value despite active cooling.
Affected components
- Battery cooling system
- Electric coolant pump
- Battery cooling fan
Common causes
- High likelihood: Coolant pump failed
- Medium likelihood: Battery radiator clogged
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.