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TuningBot DTC Database · v4.37.14

P0003 Fuel Volume Regulator Control Circuit Low

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainFuelOBD2

What P0003 means

P0003
Fuel Volume Regulator Control Circuit Low Generic · fuel Data confidence 90%

The control module detected that the signal in the Fuel Volume Regulator Control circuit stayed below the expected operating range.

Symptoms

  • Possible hard starting or long cranking
  • Possible reduced power or cutting out
  • MIL illuminated

Possible causes

  • Wiring short to earth
  • regulator control solenoid

Recommended checks

  • Read specified vs actual rail pressure at cranking, idle and load
  • Check low-pressure supply (pressure/volume) first
  • Check control valve/regulator operation
  • Measure injector return flow where applicable
  • Inspect wiring and connectors of pressure components

Related and nearby codes

How to read P0003

P

Powertrain: engine, transmission and driveline systems.

0

Generic SAE-standard code: same meaning on every make.

003

Specific fault index within the subsystem.

Frequently asked questions about P0003

What does P0003 mean?

Fuel Volume Regulator Control Circuit Low. The control module detected that the signal in the Fuel Volume Regulator Control circuit stayed below the expected operating range.

Is P0003 generic or manufacturer-specific?

P0003 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P0003 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningDyno-tested results by model and engine See the results →

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