1. Engine Malfunction: Malfunctions within the engine, such as sensor failures, fuel injection issues, or problems with the ignition system, can trigger both lights to illuminate.
2. Emission Control System Issues: Faults related to the emission control system, including malfunctions in the catalytic converter, oxygen sensors, or evaporative emission control system, can cause these lights to come on.
3. Engine Overheating: If the engine coolant temperature becomes too high, the service light and engine light might activate as warning indicators.
4. Transmission Problems: Issues with the transmission, such as low transmission fluid levels or internal mechanical problems, can also cause these lights to come on.
5. Electrical Problems: Faults in electrical components, including faulty wiring, sensor malfunctions, or problems with the car's computer (ECU), can lead to the illumination of both lights.
To accurately diagnose the cause, it's recommended to connect your vehicle to a diagnostic scanner or have it inspected by a qualified mechanic who can identify the specific issue and provide appropriate repairs or maintenance. Ignoring these warning lights can potentially lead to further problems or even damage to your car's engine and other components.
