BMW DTC P0484 – Fan Circuit Current High
DTC P0484 meaning on BMW
The Diagnostic Trouble Code (DTC) P0484 for BMW indicates that there is a high current condition detected in the fan circuit. This typically refers to the cooling fan circuit in the vehicle.
BMW DTC P0484 symptoms
Symptoms of a DTC P0484 on a BMW may include:
- Engine overheating
- Check Engine Light (CEL) illuminated on the dashboard
- Reduced engine performance
- Visible damage to the cooling fan or its wiring
BMW DTC P0484 causes
Common causes of a DTC P0484 on a BMW include:
- Defective cooling fan motor
- Faulty cooling fan relay
- Short circuit in the cooling fan wiring
- Issues with the engine coolant temperature sensor
BMW DTC P0484 seriousness
The seriousness of a DTC P0484 on a BMW should not be ignored, as it can lead to engine overheating and potential damage if not addressed promptly. Driving with a malfunctioning cooling fan can result in engine damage and costly repairs.
How to diagnose DTC P0484 on BMW
To diagnose a DTC P0484 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the cooling fan and its wiring for any visible damage
- Test the cooling fan motor and relay for proper functionality
- Check the engine coolant temperature sensor for any issues
How to fix DTC P0484 on BMW
To fix a DTC P0484 on a BMW, you can try the following solutions:
- Replace the defective cooling fan motor
- Replace the faulty cooling fan relay
- Repair any short circuits in the cooling fan wiring
- Replace the engine coolant temperature sensor if necessary
How to erase DTC P0484 on BMW
To erase a DTC P0484 on a BMW, you can clear the fault codes using a diagnostic scanner. After fixing the underlying issue causing the fault code, clearing the code will reset the Check Engine Light and ensure that the repair was successful.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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