Error code P0482 is displayed and the engine indicator light is on - what does this mean?
The OBD/EOBD system has detected a fault in fan control circuit 2. This DTC P0482 indicates that the engine control unit has detected a problem with the electrical circuit of the second radiator fan. This error code may have slightly different names for different manufacturers, but always refers to problems in the fan system.
What causes can this error code have?
- Defective fan relay for fan 2
- Damaged fan control module
- Blown fuse in the fan circuit
- Defective radiator fan motor
- Broken or damaged cable connections
- Corroded plug connections
- Faulty motor control (ECM/PCM)
- Defective coolant temperature sensor
What symptoms occur in parallel with error code P0482?
- Engine overheating: Especially in city traffic or at low speeds
- Fan does not start: The second radiator fan does not start despite high engine temperature
- Temperature display rises: The coolant temperature reaches critical values
- Reduced engine power: The vehicle switches to emergency running mode
- Air conditioning works poorly: Especially when the vehicle is stationary
- Steam from the engine compartment: In severe cases of overheating
How can the problem with error code P0482 be rectified?
- Repairing trouble code P0482 requires a systematic diagnosis of the fan control. Here are the most important solutions:
- Replace fan relay: Identify the defective relay for fan 2 and replace it with a new one, also checking the relay socket for corrosion
- Check and replace fuses: Check all fuses in the fan circuit and replace blown fuses
- Replace the fan motor: If the radiator fan motor is defective, replace the entire motor and clean the electrical connections
- Repair cable connections: Locate damaged cables in the fan circuit, repair or replace completely
- Replace fan control module: Replace the electronic control module for the fan control with a new one
- Clean plug connections: Remove corrosion from all electrical connections in the fan system and treat with contact spray
FAQ - Frequently asked questions about DTC P0482
Can I continue driving with error code P0482?
No, you should not continue driving, as error code P0482 can lead to engine overheating. There is a risk of serious engine damage due to overheating, especially in warm weather or in city traffic.
How much does it cost to repair error code P0482?
The repair costs for code P0482 vary depending on the cause: relays or fuses cost 10-30 euros, a new fan motor 150-400 euros, and a fan control module 200-600 euros. The working time is usually 1-3 hours.
How can I tell if the fan in P0482 is defective?
When the engine is running and the operating temperature is warm, you should check whether both radiator fans are running. If only one fan is running or both are stationary, this indicates fault code P0482.
Can I repair fault code P0482 myself?
You can carry out simple repairs such as replacing fuses or relays yourself. For more complex problems with the fan control module or the wiring, you should visit a specialist workshop, as special diagnostic equipment is required here.
How do I prevent error code P0482 from occurring again?
Regular maintenance of the cooling system, cleaning the fans to remove dirt and leaves and checking the electrical connections can prevent EOBD code P0482 from recurring.
Is the error code P0482 the same for all vehicles?
Yes, the OBD code P0482 is a standardized error code that has the same meaning for all vehicles with an OBD II system. However, the repair procedures may differ depending on the manufacturer.
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