What does a service light on 2000 Chevy Cavalier mean?

The service engine light (often a check engine light shaped like an engine) on a 2000 Chevy Cavalier, like on most cars, doesn't specify the problem. It indicates that the car's onboard diagnostic system (OBD II) has detected a malfunction.

To find out what's causing the light, you need to:

* Get the diagnostic trouble codes (DTCs): You can do this in a few ways:

* OBD II Scanner: The most reliable method. Buy a relatively inexpensive OBD II scanner at an auto parts store. Plug it into the car's OBD II port (usually under the dashboard) and it will read the codes.

* Auto Parts Store: Many auto parts stores will read the codes for free.

* Mechanic: A mechanic will definitely be able to read the codes.

* Interpret the codes: Once you have the codes, you can look them up online (many free resources are available) or in a repair manual specific to your 2000 Chevy Cavalier. The codes will give you a much better idea of what the problem is.

Possible causes (without knowing the code): The service engine light could be triggered by a wide range of issues, from something minor like a loose gas cap to something more serious like a failing catalytic converter or sensor. Don't ignore it, as driving with a malfunctioning system could damage your engine or lead to unsafe driving conditions.