Cooling fan circuit fault.
P0480 — also written PO48O, P 0480, 0480 — is the OBD-II code for cooling fan 1 control circuit. Same code, same fix: this page covers every spelling of it.
Your car's brain has lost control of the low-speed cooling fan. It’s a classic headache on Vauxhalls and Fords where the wiring loom or the resistor block simply gives up the ghost.
P0480 is a electrical fault code, typically costing £100–£600 to put right in a UK garage.
What P0480 actually feels like to drive
- The air con stops blowing cold the second you hit traffic or a red light.
- Temperature needle creeping past the halfway mark when idling in a Tesco car park.
- A sudden 'service vehicle soon' message on the dash (common on Vauxhalls).
- The fan sounds like a jet engine at 100% speed even when the car is relatively cool.
- Loud clicking from the engine fuse box followed by nothing happening.
What causes P0480?
- Failed fan motor
- Failed relay
- Wiring
UK vehicles that throw P0480 most often
- Vauxhall Astra J / GTC (A14NET/A16LET) 2010-2015
- Ford Focus Mk3 1.6 TDCi (DV6) 2011-2018
- Vauxhall Insignia A (A20DTH) 2008-2017
- Fiat 500 1.2 Petrol (169A4000) 2007-2020
- Land Rover Freelander 2 2.2 SD4 2006-2014
- Citroen Berlingo 1.6 BlueHDi 2015-2019
How P0480 is fixed
- Fan replacement
- Relay swap
The P0480 misdiagnosis that wastes money
I see folk tossing new fan assemblies or 'upgraded' relays at this constantly without checking the basic wiring harness down near the chassis rail. On the Vauxhall Astras and Insignias, the 'resistor pack' on the fan shroud burns out, or the wires in the loom rub raw against the plastic casing. If you just swap the fan unit, you’ll be scratching your head when the new one doesn’t spin up either. It’s almost always a green-crusty wire or a roasted resistor connector rather than a total motor failure.
What a UK garage should charge for P0480
A standard diagnostic hook-up will run you £50 to £80 at a decent indie. If it's just the fan relay or a snapped wire, you're looking at £100-£150 all-in. However, if the fan motor is shot or the resistor pack is integrated, a Bosch or Valeo replacement unit is £180-£300 from theปัจจัย (factor), plus two hours of labour at roughly £60-£90 an hour. Direct from a main dealer like Arnold Clark, you won't see much change from £600.
P0480 repair cost in the UK
Most P0480 repairs land between £100–£600 including parts and labour. The spread is wide because the cheap fix (a sensor, a hose, a leak) and the expensive fix (a major component) throw the same code — which is why a proper diagnosis before parts are bought saves the most money.
Bob's tip on P0480
When you drop it off at the garage, don't just say 'fix the fan.' Tell them to perform a 'bi-directional component test' using their diagnostic scanner. That forces the ECU to trigger the fan speeds manually. If Speed 1 stays dead but Speed 2 roars to life, you know it's the resistor or the low-speed circuit, not the whole motor. Also, insist they check the cooling fan fuse with a multimeter, not just a visual check—I've seen micro-cracks in those big 40A MIDI fuses that look fine to the eye but break contact when the engine bay gets hot.
Can you drive with P0480?
Risk of overheating in traffic.
Urgency: high.