P1479High-speed cooling fan control circuit fault
- Ford code · Engine
- How the car detects it
- The engine computer checks the circuit it uses to switch on the high-speed radiator fan relay and found it open, shorted or drawing too much current. Without the high fan speed the engine may run hot under load or with the air conditioning on.
- What you may notice
- Cooling fan not reaching high speed
- Engine running hot under load
- Likely causes
- PossibleFan relay control wiring open or shorted
- PossibleHigh-speed fan relay
- RareNo power feed to the relay
- Sources
Backed by at least two independent sources.
From Obdaryn's Ford pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.