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P0482 is a diagnostic trouble code (DTC) for "Cooling Fan 3 Control Circuit Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
The P0482 code is indicative of cooling fan 3 control circuit malfunction. Concurrent codes may be present, such as P0480, P0481, P0482, P1474, P1477 and/or P1479. If such codes are stored along with P0482, each one should be addressed in the order the event occurred.
The electric cooling fan is a crucial element in keeping a vehicle’s engine from overheating. Some vehicles have two or three cooling fans, and in this case, the involved control circuit is that which operates fan #3. This code indicates that the PCM (powertrain control module) has detected voltage in the cooling fan control circuit outside of the normal parameters.
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:
Symptoms of this code may include an illuminated Service Engine Soon warning light, and as the problem progresses overheating and insufficient air conditioning function may occur.
Diagnosing a problem within the cooling fan’s electric circuit involves not only visual inspection, but testing of the circuitry, sensors, and relay as well. Diagnostic steps may include:
After completion of each step, the code will be cleared the vehicle retested to see if it returns.
One of the most common mistakes when diagnosing this problem is replacing the fan motor without carrying out a thorough investigation of all of the other components. Cooling fan relays are a frequent source of this type of fault code and have been involved in multiple recalls.
While the issue may not seem pressing at first, any fault in the cooling system of a vehicle can result in catastrophic engine damage if not addressed promptly.
Possible repairs for this code may include:
Because the cooling fan circuitry consists of such a complex network of wires, connectors, relays, sensors, and other components, locating and repairing the problem can be a lengthy, complicated undertaking best completed by a professional with the proper tools. In some vehicles the fan motors are driven by hydraulic pressure provided by the steering pump. Due to this set-up, any power steering leaks or other issues should be repaired before addressing the cooling fan fault.
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