How Do I Troubleshoot My Audi A2's Engine Warning Light?

I have a 2002 Audi A2 and the engine warning light keeps coming on. How can I troubleshoot this issue?

First, check the fuel cap to make sure it is properly sealed. A loose cap can trigger the warning light. If that is not the issue, check the engine oil level. Low oil levels can also trigger the light. If both of those check out, it could be a more serious issue. It's best to take your car to a certified mechanic for a diagnostic test.

The most common cause of an engine warning light is a faulty oxygen sensor. This can affect the performance of your car and should be addressed immediately. It's important to get this checked and replaced by a professional.

Another common cause of the engine warning light is a faulty catalytic converter. This can reduce the emissions of your car, resulting in poor performance and potentially causing other issues. It's best to take your car to a mechanic and get this component checked and replaced if necessary.