Alternative Fuel Consumption Too High
The AFCM detects that alternative fuel consumption exceeds the expected value for the active operating mode. Indicates injector leakage, fuel pressure too high, or unmetered fuel loss.
Affected components
- Alt fuel injectors
- Alt fuel rail
- Alt fuel pressure regulator
Common causes
- High likelihood: Alt fuel injector leaking
- Medium likelihood: Fuel rail pressure above target
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.