P1481
Cooling Fan Speed Signal Lost
Severity
⚠️ MediumCan you drive?
Do not drive — repair immediately
Approx. repair cost
$17–56 (est.)
Symptoms
- Engine overheating
- Unstable cooling fan operation
- Check Engine Light Illuminated
- Reduced engine performance
Causes
- Open or short circuit in the fan circuit
- Fan speed sensor malfunction
- Fan relay problems
- Engine control unit malfunction
- Wiring harness damage
How to Fix
- Check the fan circuit for breaks and short circuits
- Check fan speed sensor
- Check fan relay
- Check the condition of the wiring harness
- If necessary, replace the cooling fan