Understanding Your Check Engine Light

The check engine light, also known as the malfunction indicator lamp (MIL), is a signal from your car’s engine computer that something is wrong. While it can be a source of anxiety for many drivers, it’s essential to understand that the check engine light is your car’s way of communicating with you.

What Does the Check Engine Light Mean?

When the check engine light comes on, it indicates that your car's onboard diagnostic system (OBD-II) has detected a problem with one of the systems or components monitored by the system. This can range from something as simple as a loose gas cap to a more serious issue like a faulty oxygen sensor.

What to Do When the Check Engine Light Comes On: