Alternative Fuel Return Line Valve Control Circuit Range/Performance
The control circuit of the alternative fuel return line valve reports a control circuit range/performance condition. Excess fuel return to the tank cannot be commanded as expected.
Affected components
- Alt fuel return line valve
- Wiring harness
- Afcm
Common causes
- High likelihood: Valve responds slower than expected
- Medium likelihood: High-resistance contact in connector
- Low likelihood: Sensor element aged beyond calibration window
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- Reduced-power or limp mode may occur
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.