1. Faulty Oxygen Sensor: The oxygen sensor monitors the amount of oxygen in the exhaust gas and helps adjust the fuel mixture accordingly. A faulty oxygen sensor can cause the engine light to illuminate.
2. Catalytic Converter Issues: The catalytic converter helps convert harmful pollutants in the exhaust gas into less harmful substances. A clogged or damaged catalytic converter can cause the engine light to come on.
3. EGR (Exhaust Gas Recirculation) System Problems: The EGR system recirculates a portion of the exhaust gas back into the engine to reduce emissions. Issues with the EGR valve or related components can trigger the engine light.
4. Faulty Ignition System Components: Problems with spark plugs, ignition wires, or the distributor cap and rotor can cause engine misfires and illuminate the engine light.
5. Transmission Problems: In some cases, transmission issues, such as a faulty shift solenoid or transmission fluid issues, can also cause the engine light to stay on.
It is recommended to have the car diagnosed by a qualified mechanic to identify the specific cause of the engine light staying on and have the necessary repairs performed to resolve the issue.
