What dose it mean when the engin light goes on?

When the engine light turns on, it typically indicates that the vehicle's onboard diagnostic system has detected a problem. This can range from minor issues, such as a loose gas cap, to more serious engine or emissions system problems. It's important to have the vehicle checked as soon as possible to prevent potential damage or decreased performance. If the light is flashing, it often signifies a more urgent issue that requires immediate attention.