OBD Guide
ENFRDEESPT

P0480

Fan 1 Control Circuit

P0480 is an OBD-II diagnostic trouble code meaning: Fan 1 Control Circuit. Common causes: faulty fan relay, blown fan circuit fuse. Estimated repair cost: $6–133.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$6–133 (est.)

Symptoms

  • Check Engine Light Is On
  • Engine overheating (especially in traffic jams and under high load)
  • The fan does not turn on when the engine heats up
  • The fan runs constantly even when the engine is cold
  • The air conditioner cools worse than usual
  • Increase in coolant temperature on the gauge

Causes

  • Faulty fan relay
  • Blown fan circuit fuse
  • Open or short circuit in fan wiring
  • Faulty fan motor
  • Faulty fan control module (on vehicles without a separate relay)
  • ECU malfunction (rare)
  • Oxidized connectors in the control circuit

How to Fix

  1. Check the fan circuit fuses (according to the specific car diagram)
  2. Check the fan relay: replace it with a similar serviceable one from the fuse box
  3. Measure the supply voltage at the fan connector when the ECU commands to turn on
  4. Check fan grounding
  5. Check the fan motor: apply power directly from the battery - it should rotate
  6. Check the integrity of the wiring from the computer to the relay and from the relay to the fan
  7. Activate the fan through the scanner and observe the reaction
  8. Replace the faulty element (relay, motor or wiring harness)

Related codes

P0481P0482P0483P0484P0485P0217

Error P0480 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0480 code mean?

P0480 is an OBD-II diagnostic trouble code that indicates: Fan 1 Control Circuit

What causes a P0480 error code?

The most common causes of P0480 include: Faulty fan relay; Blown fan circuit fuse; Open or short circuit in fan wiring; Faulty fan motor.

How do I fix a P0480 diagnostic trouble code?

To fix P0480: Check the fan circuit fuses (according to the specific car diagram). Check the fan relay: replace it with a similar serviceable one from the fuse box. Measure the supply voltage at the fan connector when the ECU commands to turn on. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0480?

Do not drive — repair immediately

How much does it cost to fix P0480?

The estimated repair cost for P0480 is $6–133. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat