The oxygen sensor monitors the amount of oxygen in the exhaust gases to help regulate the fuel mixture. When the oxygen sensor fails, it can cause the service engine soon light to illuminate.
2. Catalytic Converter Failure:
The catalytic converter is a device that helps to convert harmful pollutants in the exhaust gases into less harmful substances. When the catalytic converter fails, it can cause the service engine soon light to illuminate.
3. Spark Plug Failure:
Spark plugs are responsible for creating the spark that ignites the fuel in the engine. When spark plugs fail, it can cause misfires and the service engine soon light to illuminate.
4. Faulty Ignition Coil:
The ignition coil provides the electrical charge needed to create the spark in the spark plugs. If the ignition coil is faulty, it can cause misfires and the service engine soon light to illuminate.
5. Fuel Injector Failure:
Fuel injectors are responsible for delivering the correct amount of fuel to the engine. When fuel injectors fail, it can cause the engine to run too lean or too rich, which can trigger the service engine soon light.
6. Mass Air Flow Sensor Failure:
The mass air flow sensor measures the amount of air entering the engine. When the mass air flow sensor fails, it can cause the engine to run too rich or too lean, which can trigger the service engine soon light.
7. EVAP System Problems:
The EVAP system is responsible for controlling fuel vapors in the fuel tank. When there are problems with the EVAP system, it can cause the service engine soon light to illuminate.
8. Transmission Problems:
Transmission problems, such as slipping gears or low fluid levels, can also cause the service engine soon light to illuminate.
9. Electrical Problems:
Electrical problems, such as faulty wiring, loose connections, or a weak battery, can also cause the service engine soon light to illuminate.
10. Computer Problems:
Problems with the engine control unit (ECU) or other computer systems in the vehicle can also cause the service engine soon light to illuminate.
If the service engine soon light comes on in your Mitsubishi Galant, it's important to have the vehicle diagnosed by a qualified mechanic to determine the cause of the problem and have it repaired.
