The P0481 trouble code indicates a malfunction in the control circuit of cooling fan 2. This code is typically triggered when the Engine Control Module (ECM) detects an issue with the circuit responsible for controlling the operation of the second cooling fan.
Cooling Fan 2 Control Circuit Malfunction
Code symptoms P0481.
1. Engine overheating.
2. Cooling fan 2 not functioning.
3. Illuminated “Check Engine” or “Service Engine Soon” light on the dashboard.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0481.
1. Faulty cooling fan 2.
2. Defective cooling fan relay.
3. Wiring or connection issues in the cooling fan 2 circuit.
4. Malfunctioning Engine Control Module (ECM).
Code Solutions P0481.
1. Inspect and replace the cooling fan 2 if it’s malfunctioning.
2. Check and replace the cooling fan relay if necessary.
3. Inspect the wiring and connections in the cooling fan 2 circuit for any damage or corrosion, repairing or replacing as needed.
4. If other causes are ruled out, consider diagnosing and potentially replacing the Engine Control Module (ECM) if it’s found to be faulty.