OBD Guide
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P0003

Fuel Volume Regulator Control Circuit Low

P0003 is an OBD-II diagnostic trouble code meaning: Fuel Volume Regulator Control Circuit Low. Common causes: malfunction of the fuel volume regulator, short circuit in wiring to ground. Estimated repair cost: $17–278.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–278 (est.)

Symptoms

  • Unstable engine operation at idle
  • Loss of engine power
  • Increased fuel consumption
  • Difficulty starting the engine
  • Black or white smoke from the exhaust pipe
  • Check Engine Light Illuminated

Causes

  • Malfunction of the fuel volume regulator
  • Short circuit in wiring to ground
  • Open circuit in the regulator power supply circuit
  • Oxidation or corrosion of connector contacts
  • Engine control unit malfunction
  • Wiring harness damage
  • Poor ground connection

How to Fix

  1. Connect a diagnostic scanner and read all error codes
  2. Check the condition of the fuel volume regulator connectors
  3. Measure the supply voltage at the regulator connector
  4. Check wiring integrity with a multimeter
  5. Check regulator resistance to specification
  6. Clean the connector contacts and apply dielectric grease
  7. If necessary, replace the fuel volume regulator
  8. Check and repair damaged wiring
  9. Reset error codes and take a test drive
  10. Read the codes again to confirm the problem has been resolved.

Related codes

P0001P0002P0004P0087P0088P0089

Error P0003 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0003 code mean?

P0003 is an OBD-II diagnostic trouble code that indicates: Fuel Volume Regulator Control Circuit Low

What causes a P0003 error code?

The most common causes of P0003 include: Malfunction of the fuel volume regulator; Short circuit in wiring to ground; Open circuit in the regulator power supply circuit; Oxidation or corrosion of connector contacts.

How do I fix a P0003 diagnostic trouble code?

To fix P0003: Connect a diagnostic scanner and read all error codes. Check the condition of the fuel volume regulator connectors. Measure the supply voltage at the regulator connector. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0003?

Limited driving only, diagnose soon

How much does it cost to fix P0003?

The estimated repair cost for P0003 is $17–278. Actual cost depends on your vehicle, location, and labor rates.

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