Misfire Detected - Fueling Disabled
Severe misfire detected — the PCM has disabled fuel injection on the affected cylinder(s) to protect the catalyst from raw fuel. Common protective response on heavy or sustained misfire conditions.
Affected components
- Fuel injector
- Ignition coil
- Powertrain control module
Common causes
- High likelihood: Severe misfire — read companion P030x codes
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
- 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.