Is It Safe to Drive With a P0480 Code?
Common Symptoms of a P0480 Fault
EML on
Possible overheating in traffic or at low speed
Fan may not operate when needed
Temperature gauge rising higher than normal in traffic
Possible Causes of P0480
A P0480 code can be triggered by faults across several systems. Identifying the exact root cause requires proper diagnostic equipment and live data — not just reading the code.
Cooling Fan Wiring Fault
Wiring or connector to the cooling fan or its relay is damaged.
Cooling Fan Relay Failure
The relay controlling the cooling fan has failed.
Cooling Fan Motor Failure
The fan motor itself has failed.
ECU Output Fault
The ECU output controlling the fan relay has failed.
Why we don't list the exact part: A P0480 code tells you what's happening but not why. Replacing parts based on the code alone is the most common way drivers waste money. A proper diagnosis identifies the specific cause first.
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P0480 and Your MOT
A stored P0480 fault code will cause your car to fail its MOT. The engine management light will be illuminated during the test — an automatic failure under current MOT standards. Even if the light temporarily clears, the code remains in ECU memory and can be read by testers.
Get the fault diagnosed and repaired first, then have the code cleared and confirm the light stays off before booking your MOT.