What does the check engine light on a 2001 mercedes s430 mean?

The check engine light on a 2001 Mercedes S430 indicates that the vehicle's onboard diagnostics system has detected a problem with the engine or emissions system. This could be due to various issues, such as a faulty sensor, a loose gas cap, or more serious engine problems. It's important to have the vehicle scanned for trouble codes to identify the specific issue. Ignoring the light can lead to decreased performance and increased emissions.