* Oxygen sensor: The oxygen sensor measures the amount of oxygen in the exhaust gases. If the oxygen sensor is faulty, it can cause the air/fuel mixture to be incorrect, which can lead to a variety of problems, including increased emissions, reduced fuel economy, and poor performance.
* Catalytic converter: The catalytic converter is a device that helps to reduce emissions. If the catalytic converter is damaged or faulty, it can cause the Service Engine Soon light to come on.
* Spark plugs: The spark plugs are responsible for igniting the air/fuel mixture in the cylinders. If the spark plugs are worn or faulty, it can cause the engine to misfire, which can lead to a variety of problems, including increased emissions, reduced fuel economy, and poor performance.
* Vacuum leaks: Vacuum leaks can cause the engine to run lean, which can lead to increased emissions and reduced fuel economy.
* Computer problems: The computer is responsible for controlling many of the engine's functions. If the computer is faulty, it can cause a variety of problems, including the Service Engine Soon light coming on.
If the Service Engine Soon light is on, it is important to have your car diagnosed to find out the exact cause of the problem. Ignoring the problem can lead to further damage to your car.
