P0484 Code: Cooling Fan Circuit Current High
🟠 Moderate severity · drivable
Drivable, but a shorted fan circuit can drain the battery or overheat the engine; fix it soon.
What P0484 means
The cooling fan circuit is drawing more electrical current than the engine computer expects. High current usually means a shorted fan motor, a wiring short, or a stuck fan that is working too hard. The computer stores this code to warn that the fan circuit could overheat or blow a fuse.
Symptoms
- Check engine light is on
- Cooling fan fuse blowing repeatedly
- Fan running slower than normal or not at all
- Engine temperature climbing
Common causes
- most common: Shorted or failing cooling fan motor
- common: Damaged wiring shorting to ground
- common: Faulty fan relay or module
- less common: Debris blocking the fan from spinning
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Check the fuse and inspect fan wiring for shorts | Yes | $20–100 |
| Replace the cooling fan motor | Yes | $150–400 |
| Replace the fan relay or control module | Mechanic | $50–200 |
Frequently asked questions
Can I drive with a P0484 code?
Yes, but the fan circuit may blow fuses or leave the engine without cooling. Get it fixed before driving in hot weather.
What does high current in the fan circuit mean?
It means too much electricity is flowing, usually because a fan motor is shorted or wiring is damaged.
How much does it cost to fix a P0484?
Wiring and fuse repairs cost $20–$100. A replacement fan motor typically runs $150–$400.
Related codes
P0480
P0480 Code: Cooling Fan 1 Control Circuit Malfunction
P0483P0483 Code: Cooling Fan Rationality Check Fault
P0485P0485 Code: Cooling Fan Power/Ground Circuit Fault
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.