OBD
P0484
Fan Circuit Current High
What it means
P0484 means Fan Circuit Current High.
Check these first
- A fan motor drawing too much current
- A short to ground in the fan circuit
- Corrosion raising resistance in the fan connector
- A failing fan relay
What to do next
- Measure the fan circuit current while the fan runs
- Inspect the fan wiring for a short to ground
- Check the fan connector for corrosion
- Replace the fan motor if current stays high
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.