P0480 means the ECM detected an electrical fault on the primary cooling fan control circuit. The fan may not spin when commanded, so the engine can overheat at idle or in traffic and the A/C loses cooling capacity.
P0480 means the ECM detected an electrical fault on the primary cooling fan control circuit. The fan may not spin when commanded, so the engine can overheat at idle or in traffic and the A/C loses cooling capacity.
P0480 is a cooling system-related diagnostic trouble code classified as moderate severity. When your vehicle's ECU detects this condition, it stores P0480 and illuminates the check engine light.
If your vehicle has triggered P0480, you may notice one or more of these symptoms:
Here are the most common causes of P0480, ranked by how likely they are to be the culprit:
No - address this immediately. You can drive short distances at highway speed where ram air cools the radiator, but stop-and-go traffic will overheat the engine within minutes. Fix it before your next commute.
Follow these steps to pinpoint the root cause of P0480:
Repair costs for P0480 vary depending on the root cause and your vehicle. Here are typical estimates:
Prices estimated as of March 2026. Costs vary by region, vehicle, and shop.
P0480 behaves differently depending on your vehicle. Select your car below for model-specific causes, known issues, and adjusted cost estimates:
Ford F-150
See Ford-specific causes & costVW Golf
See Volkswagen-specific causes & costChevrolet Silverado 1500
See Chevrolet-specific causes & costBMW 3-Series
See BMW-specific causes & costHonda Civic
See Honda-specific causes & costThese codes are often seen alongside P0480 or indicate related issues:
On the highway, briefly. Ram air through the radiator does most of the cooling above 60 km/h. But in traffic or at idle you'll overheat within 5 to 10 minutes, and a warped head or blown gasket runs €1,500 or more.
Most ECMs default the fan to 100% as a fail-safe when they lose control authority over the circuit. It protects the engine while the fault is present and it's a strong hint the control side (relay, module, or driver) failed rather than the motor itself.
It's the single most common fix, roughly 40% of the cases I've seen, but not guaranteed. Test-swap the relay with an identical one from the same fuse box before buying anything. If that doesn't restore normal operation, move to the fuse, then the motor, then the wiring.
Usually yes. On most cars the primary fan doubles as the condenser fan. When it won't run, high-side pressure spikes at idle and the ECM either commands the compressor off or you just get warm air until you start moving.
Not directly. P0480 is a circuit-side electrical fault. A bad ECT sensor throws P0117 or P0118 and can make the fan behave oddly, but the ECM won't set P0480 unless it sees an actual open, short, or wrong feedback on the fan control line.
A flashing check engine light is not the same as a steady one. It almost always means an active misfire that can wreck your catalytic converter in minutes.
An unfamiliar light just appeared on your dashboard and you have no idea what it means. Here is how to read every symbol by colour and which ones mean stop now.
Your car logged P0480. Skanyx reads it on any standard Bluetooth OBD2 adapter, tells you whether it is safe to keep driving, and shows the €2-€700 repair range so you know the number before a shop quotes you.
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