What Does A Check Engine Light Mean? The Check Engine Light in your car can signal various issues. Emissions problems and sensor failures can cause the Check Engine Light to come on. The Check Engine Light is also known as the Malfunction Indicator Lamp. It is a critical warning on your car’s dashboard. It’s a sign that your car’s onboard computer (ECM or PCM) has found a problem in the engine or emission control system. Newer cars have robust emission controls. The Check Engine Light indicates issues with the catalytic converter or oxygen sensor. Loose gas caps, faulty fuel injectors, or fuel pump problems are also triggers. Engine misfires from spark plugs, ignition coils, or vacuum leaks are common causes. Sometimes, transmission issues can also cause the Check Engine Light to come on. Some root causes are wiring problems, faulty connectors, or electrical components. Our mechanics will use specialized equipment to pinpoint information about the issue. It is important to have these issues checked promptly. Click the link for more information.