2014 Jeep Wrangler Code P0480 Set When Hot at Idle - Relay Location Confusion

Code P0480 on a 2014 Jeep Wrangler points to a cooling fan relay circuit fault. The most likely cause is a bad or mislocated cooling fan relay, especially if the fan doesn't come on when the engine gets hot at idle. Conflicting info on relay location is common because Jeep sometimes uses multiple relays in the under-hood fuse box or a separate relay box near the battery.

Most likely culprits

• Cooling fan relay: This relay controls the fan; if it fails or is in the wrong socket, the fan won't run and triggers P0480.
• Cooling fan motor: If the relay is good but the fan motor is dead or seized, the circuit fault can set.
• Wiring/connectors: Corrosion or damage in the relay socket or fan wiring can cause intermittent faults.

How to narrow it down

1. Locate the cooling fan relay in the under-hood fuse/relay box. Check the owner's manual or a reliable Jeep service manual for exact relay ID and location.
2. Swap the suspected cooling fan relay with a similar relay in the box (like the horn or A/C relay) to see if the fan runs and code clears.
3. Start the engine and let it reach operating temperature; watch if the cooling fan kicks on at idle. No fan = suspect relay or motor.
4. Listen or visually check the fan motor when the relay is energized (you can jump the relay socket terminals carefully to test fan motor directly).
5. Inspect wiring and connectors around the relay and fan motor for corrosion, damage, or loose pins.
6. If relay and wiring check out but fan still doesn't run, test or replace the cooling fan motor.
7. If all above are good, consider cooling fan control module or PCM output, but this is less common.

Possible parts (if needed)

• Cooling fan relay (only if relay swap/test fails)
• Cooling fan motor (only if motor doesn't run when powered directly)
• Wiring repair parts (connectors, terminals) if corrosion/damage found

A few questions

• Does the cooling fan run at all when the engine is hot, or is it completely dead?
• Have you checked or swapped the cooling fan relay already? If so, which relay box and position?
• Any other symptoms like overheating, fan noise, or electrical issues?