Why theCheck engine light on 98 mercury mystique?

The check engine light on a 1998 Mercury Mystique can illuminate for various reasons, including issues with the engine, transmission, or emissions system. Common causes may include a loose or damaged gas cap, faulty oxygen sensors, or issues with the catalytic converter. To accurately diagnose the problem, it's recommended to use an OBD-II scanner to retrieve the specific trouble codes. Addressing these codes can help identify and resolve the underlying issue.