Symptoms
- Engine may idle roughly
- Engine may stall
- Lack of power
- Poor fuel economy
- Check engine light is illuminated
Causes
There are many possible causes for this code, including:
- Ignition problems: spark plug, spark plug wire, or coil
- Fuel problems: injector, fuel pressure, or fuel filter
- Mechanical problems: compression, exhaust leak, or valvetrain
- Sensors: MAF sensor, O2 sensor, or coolant temperature sensor
- ECU