OBD Guide
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P04BB

Fuel Fill Door Lock Control Circuit/Open

P04BB is an OBD-II diagnostic trouble code meaning: Fuel Fill Door Lock Control Circuit/Open. Common causes: open lock control circuit, solenoid valve malfunction. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • The fuel tank door lock does not work
  • Check Engine light comes on
  • Error message on the dashboard

Causes

  • Open lock control circuit
  • Solenoid valve malfunction
  • Contact corrosion
  • Wiring harness damage
  • Blown fuse
  • Control unit malfunction

How to Fix

  1. Check the lock control circuit fuse
  2. Inspect the wiring harness for damage
  3. Check the operation of the solenoid valve
  4. Clean contacts from corrosion
  5. Replace faulty components

Related codes

P04BCP04BD

Error P04BB by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P04BB code mean?

P04BB is an OBD-II diagnostic trouble code that indicates: Fuel Fill Door Lock Control Circuit/Open

What causes a P04BB error code?

The most common causes of P04BB include: Open lock control circuit; Solenoid valve malfunction; Contact corrosion; Wiring harness damage.

How do I fix a P04BB diagnostic trouble code?

To fix P04BB: Check the lock control circuit fuse. Inspect the wiring harness for damage. Check the operation of the solenoid valve. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P04BB?

Yes, but get it checked soon

How much does it cost to fix P04BB?

The estimated repair cost for P04BB is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat