Alternative Fuel Random/Multiple Cylinder Misfire Detected
Random or multiple cylinder misfire detected during alternative fuel operation. System-wide fueling or ignition issue.
Affected components
- Alt fuel injectors
- Alt fuel rail
- Ignition coils
Common causes
- High likelihood: Injector clogged or weak
- Medium likelihood: Fuel quality off-spec
Possible symptoms
- Check engine light on or flashing
- Rough idle and uneven running
- Power loss, hesitation under acceleration
- Increased fuel consumption
- Possible smell of unburned fuel from exhaust
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
- 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.