Code : P0481
Make : 1997_FORD_F150
Description : P0481 1997 FORD F150 High Fan Control Primary Circuit Failure
Possible causes :
– Faulty fan control relay
– Faulty cooling fan 2
– Fan control relay harness is open or shorted
– Fan control relay circuit poor electrical connection
– Fan cooling fan harness is open or shorted
– Fan cooling fan circuit poor electrical connection
– Damaged PCM
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.
