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.
Affected components
- Fuel volume regulator
- Fvr wiring
Common causes
- High likelihood: Wiring shorted to ground
- Medium likelihood: Regulator coil internal short
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- Reduced-power or limp mode may occur
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.