Fuel Volume Regulator A Control Circuit High
The ECU sees the control voltage of fuel volume regulator A above the expected range, typically a short to power or open ground return.
Affected components
- Fuel volume regulator
- Fvr wiring
Common causes
- High likelihood: Wiring shorted to battery voltage
- Medium likelihood: Open ground return path
- 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.