2. Catalytic Converter: The catalytic converter helps to convert harmful pollutants in the exhaust gases into less harmful substances. If the catalytic converter is damaged or malfunctioning, it can cause the check engine light to come on.
3. Mass Air Flow (MAF) Sensor: The MAF sensor measures the amount of air flowing into the engine. If the sensor is dirty or malfunctioning, it can cause the engine to run rich or lean, which can trigger the check engine light.
4. Throttle Position Sensor (TPS): The TPS sensor monitors the position of the throttle valve. If the sensor is dirty or malfunctioning, it can cause the engine to run rough or stall, which can trigger the check engine light.
5. EGR (Exhaust Gas Recirculation) System: The EGR system recirculates a small amount of exhaust gases back into the engine to help reduce emissions. If the EGR system is clogged or malfunctioning, it can cause the engine to run rough or stall, which can trigger the check engine light.
6. Spark Plugs and Wires: Worn or damaged spark plugs and wires can cause the engine to misfire, which can trigger the check engine light.
7. Fuel Injector: A faulty fuel injector can cause the engine to run rich or lean, which can trigger the check engine light.
8. Vacuum Leaks: Vacuum leaks can cause the engine to run lean, which can trigger the check engine light.
9. Computer Issues: Malfunctions or glitches in the vehicle's computer system can cause the check engine light to come on.
10. Loose or damaged gas cap: A loose or damaged gas cap can cause the check engine light to come on.
It's important to note that the check engine light can be triggered by a variety of issues, and the actual cause may not be immediately obvious. If the check engine light comes on, it's best to have the vehicle inspected by a qualified mechanic to diagnose the problem and determine the necessary repairs.
