OBD-II code · Powertrain (generic)
P0003 Fuel Volume Regulator A Control Circuit Low
The ECU sees the control voltage of fuel volume regulator A pulled below the expected range, typically a short to ground or a low-resistance fault in the wiring or coil.
Is it safe to drive with P0003?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyWiring shorted to ground
- PossibleRegulator coil internal short
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Fuel Volume Regulator, Fvr Wiring
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.