Error code
OBD2 P0003
OBD2P0003
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Fuel Volume Regulator Control Circuit Low.
Severity
moderateDrive cautiously and avoid heavy loads or high speeds.
Summary
Code P0003 indicates a low signal in the fuel volume regulator control circuit on diesel engines, specifically related to the fuel volume control valve (FVCV). This issue can affect the engine's performance and fuel delivery.
Symptoms
- Lack of power
- No start condition
Common Causes
- Faulty fuel volume control valve
- Fault in the FVCV circuit
- Problem with the PCM
Diagnosis
- Perform a visual inspection of the FVCV and connection.
- Test the FVCV solenoid using a current probe or multimeter.
- Check the circuit for power supply issues and PCM grounding problems.
Fixes
- Replace the faulty fuel volume control valve if necessary.
FAQ
What should I do if my check engine light is on with code P0003?
Start by performing a visual inspection and testing the FVCV solenoid. If issues persist, consult a professional mechanic.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
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