Hybrid Battery Pack Cooling Fan 1 Circuit Low
Voltage on cooling fan 1 control circuit is below threshold, indicating short to ground or driver fault.
Affected components
- Battery cooling fan
- Wiring harness
Common causes
- High likelihood: Short to ground
- Low likelihood: Connector pins corroded - high contact resistance
- Low likelihood: Harness chafing through insulation
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.