P0482 Code - Cooling Fan 3 Control Circuit Malfunction

What Does P0482 Mean?

OBD-II Code Cooling fans may stay on all the time is defined as a Fan 3 Control Circuit

The purpose of the electric cooling fan system is to provide extra cooling capacity to the conventional radiator cooling system on hot days, and/or when the A/C is on, an/or when the vehicle is being driven in stop and go traffic which causes insufficient Airflow over the radiator. When the engine control module (PCM) cannot control the cooling fan as desired, it will set code P0482.

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What are the common causes of P0482 ?

The electrical system which controls the cooling fan circuits is made up of multiple components, which means that there could be a number of different causes for P0482 to set in a vehicle:

• Faulty cooling fan motor
• Faulty cooling fan motor relay
• Damaged or loose connectors or wiring
• Faulty engine coolant temperature sensor

How do you troubleshoot P0482 ?

Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground.

Searches related to P0482 - Cooling Fan 3 Control Circuit Malfunction

• cooling fan 2 control circuit malfunction
• p0480