Alternative Fuel Consumption Too Low
The AFCM detects that alternative fuel consumption falls below the expected value for the active operating mode. Indicates injector clogging, leaks before injectors, or incorrect tank-fill correction.
Affected components
- Alt fuel injectors
- Alt fuel tank
- Afcm
Common causes
- High likelihood: Alt fuel injectors partially clogged
- Medium likelihood: Tank-fill calibration drifted
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.