P1489
High Speed Radiator Fan Control Relay Condition
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–28 (est.)
Symptoms
- Engine overheating under load
- Radiator fan does not turn on at high speed
- Check Engine Light Is On
- Reduced cooling efficiency
Causes
- Faulty fan relay
- Open or short circuit in control circuit
- Blown fuse
- Problems with the engine control unit
- Oxidation of contacts in connectors
How to Fix
- Check the fan circuit fuse
- Test the fan relay
- Check the integrity of wiring and contacts
- Diagnose the operation of the control unit
- Replace faulty components