Fan 1 Overspeed
Fan 1 Overspeed: the control module has detected this fault condition.
Affected components
- Cooling fan 1
- Fan relay 1
Common causes
- High likelihood: Fan 1 relay welded closed
- Medium likelihood: PWM line shorted to supply
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.