Solution for P0480 Cooling Fan Control Circuit Malfunction?

1 Answers
Hattie
07/29/25 5:21pm
P0480 trouble code indicates a malfunction in the fan control circuit. Here are the methods to clear the fault: 1. After troubleshooting the vehicle, it is necessary to clear the fault code: The fault code must be cleared strictly according to the specified fault code clearing procedure for the specific vehicle model. Under no circumstances should the negative battery cable be disconnected directly to clear the fault code. 2. Test the vehicle wiring and check the fan relay: If the low-speed fan control circuit still shows significant current consumption when grounded, or if no voltage is detected when the low-speed fan control circuit is not grounded, the trouble code will appear; if the low-speed fan does not rotate normally after the engine is warmed up, but continues to rotate after short-circuiting the relay, it is necessary to check whether the relay's pull-down or pull-up circuit is faulty.
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