P1479: High Fan Control Primary Circuit Malfunction
HighPowertrainCooling System
What does P1479 mean?
P1479 is a diagnostic trouble code indicating "High Fan Control Primary Circuit Malfunction". The ECU is reading a voltage that is above the expected range. This can be caused by a short to power in the wiring, a failed sensor, or a connector issue in the cooling system.
Common causes
- Damaged or corroded wiring harness
- Loose or disconnected electrical connector
- Failed cooling system sensor or actuator
- Blown fuse in the related circuit
- Poor ground connection
What should you do?
This is a significant issue that should be diagnosed and repaired soon. Avoid long trips or heavy driving until the problem is resolved. Continued driving may cause additional damage.
Get a diagnosis for YOUR car
Code P1479 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.