- Catalytic Converter Failure
- Faulty Oxygen Sensor
- Leaking Fuel System
- Incorrect Air-Fuel Mixture
- Faulty Mass Airflow Sensor (MAF)
- Faulty Spark Plugs
- Failed Emissions Test
- Faulty Transmission Control Module (TCM)
- Transmission or Engine Control Issues
If the check engine light is on, it's important to have the car diagnosed by a qualified mechanic as soon as possible.
