- Oxygen sensor: The oxygen sensor monitors the amount of oxygen in the exhaust gas. If the oxygen sensor is faulty, it can cause the engine to run too rich or too lean, which can trigger the service engine soon light.
- Spark plugs: The spark plugs ignite the air/fuel mixture in the cylinders. If the spark plugs are worn or damaged, they can cause the engine to misfire, which can trigger the service engine soon light.
- Catalytic converter: The catalytic converter converts harmful pollutants in the exhaust gas into less harmful substances. If the catalytic converter is damaged, it can cause the engine to run poorly and trigger the service engine soon light.
- Mass air flow sensor: The mass air flow sensor measures the amount of air flowing into the engine. If the mass air flow sensor is faulty, it can cause the engine to run too rich or too lean, which can trigger the service engine soon light.
- Evaporative emissions system: The evaporative emissions system prevents fuel vapors from escaping into the atmosphere. If the evaporative emissions system is faulty, it can cause the engine to run poorly and trigger the service engine soon light.
If the service engine soon light is on, it is important to have it diagnosed by a qualified technician. The technician will be able to identify the cause of the problem and recommend the necessary repairs.
