P0480high severityPowertrain
Cooling Fan 1 Control Circuit Malfunction
on 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
The ECM has detected a fault in the cooling fan 1 control circuit. The fan may not run when needed, risking engine overheating.
Symptoms
- Engine overheating
- Cooling fan not running
- Check engine light on
Common causes
- Faulty cooling fan relay
- Damaged fan control wiring
- Failed cooling fan motor
- ECM fan driver circuit fault
Diagnostic steps
- Check fan relay and fuse
- Command fan on with scan tool
- Inspect fan control wiring
- Test fan motor and replace as needed
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