TorqueMech OBD Code Guide
P0484 - Cooling Fan Circuit Over Current
The cooling fan circuit is drawing more current than expected.
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Estimate after confirmation
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Common Next Steps
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Pressure test cooling system
Confirm external leaks, cap behavior, and pressure loss before parts.
Inspect thermostat
Compare warm-up, scan temperature, and hose temperature behavior.
Verify radiator fan operation
Check fan command, AC-load response, fuses, relays, and airflow.
Related Inspection
Code Overview
The cooling fan circuit is drawing more current than expected.
Common Causes
- Failed cooling fan relay or control module
- Fan motor or wiring problem
- Fuse, power, or ground issue
Diagnostic Steps
- Command the fan on if the scan tool supports it
- Check relay, fuse, and fan motor power and ground
- Inspect harness routing and connector condition
Related OBD Codes
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Next Steps
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