Hybrid Battery Pack Cooling Fan 1 Performance
BMS detects that the battery pack cooling fan 1 does not produce expected airflow or speed, leading to insufficient cooling under load.
Affected components
- Battery cooling fan
- Fan motor
- Air duct
Common causes
- High likelihood: Fan motor worn
- Medium likelihood: Cooling duct blocked
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
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.