What does t mean when the engine light is on?
What does t mean when the engine light is on? The light could be a minor issue, such as a faulty gas cap, or it could mean something more serious, such as a misfiring engine. The check engine light — more formally known as the malfunction indicator lamp — is a signal from the car's engine computer that something is wrong. Why is the engine light on? If your light is on, it typically means the car's emissions control system is faulty and the vehicle is polluting the air beyond allowable federal standards. A vehicle in this condition would fail...