OBD Guide
ENFRDEESPT

P0004

Fuel Volume Regulator Control Circuit High

P0004 is an OBD-II diagnostic trouble code meaning: Fuel Volume Regulator Control Circuit High. Common causes: short circuit in the wiring of the fuel volume regulator, malfunction of the fuel volume regulator itself. Estimated repair cost: $22–389.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–389 (est.)

Symptoms

  • Difficulty starting the engine
  • Unstable idling
  • Loss of engine power
  • Black smoke from the exhaust pipe
  • Increased fuel consumption
  • Check Engine Light on Dashboard
  • Engine transition to emergency mode

Causes

  • Short circuit in the wiring of the fuel volume regulator
  • Malfunction of the fuel volume regulator itself
  • Damage to the regulator connector
  • Oxidation or corrosion of contacts
  • Engine control unit malfunction
  • Ground wire break
  • Moisture getting into electrical connections

How to Fix

  1. Check battery voltage and alternator charging
  2. Read error codes and record engine operating parameters
  3. Check the condition of the fuel volume regulator connector
  4. Measure the resistance of the regulator control circuit
  5. Check the supply voltage on the regulator
  6. Test the fuel volume regulator with a multimeter
  7. Check the integrity of the wiring from the ECU to the regulator
  8. If necessary, replace the fuel volume regulator
  9. Clear error codes and test drive

Related codes

P0003P0005P0006P0087P0088P0089P0093P0094

Error P0004 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0004 code mean?

P0004 is an OBD-II diagnostic trouble code that indicates: Fuel Volume Regulator Control Circuit High

What causes a P0004 error code?

The most common causes of P0004 include: Short circuit in the wiring of the fuel volume regulator; Malfunction of the fuel volume regulator itself; Damage to the regulator connector; Oxidation or corrosion of contacts.

How do I fix a P0004 diagnostic trouble code?

To fix P0004: Check battery voltage and alternator charging. Read error codes and record engine operating parameters. Check the condition of the fuel volume regulator connector. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0004?

Limited driving only, diagnose soon

How much does it cost to fix P0004?

The estimated repair cost for P0004 is $22–389. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat