* Oxygen sensor: The oxygen sensor measures the amount of oxygen in the exhaust gas. If the oxygen sensor is faulty, it can cause the engine to run rich or lean, which can lead to a check engine light.
* Mass air flow sensor: The mass air flow sensor measures the amount of air entering the engine. If the mass air flow sensor is faulty, it can cause the engine to run rich or lean, which can lead to a check engine light.
* Catalytic converter: The catalytic converter helps to clean the exhaust gas. If the catalytic converter is faulty, it can cause the engine to run rich or lean, which can lead to a check engine light.
* Spark plugs: The spark plugs ignite the fuel in the engine. If the spark plugs are faulty, it can cause the engine to run rough or misfire, which can lead to a check engine light.
* Fuel injector: The fuel injectors deliver fuel to the engine. If the fuel injectors are faulty, it can cause the engine to run rich or lean, which can lead to a check engine light.
If you see a check engine light come on in your 1997 Jaguar XJ6, it's important to have it diagnosed by a qualified mechanic to determine the cause. Driving with a check engine light on can damage your engine and lead to costly repairs.
