How do I troubleshoot a check engine light in my Audi A2?

I noticed a check engine light has come on in my Audi A2. How can I figure out what could be causing this issue and how can I potentially fix it?

You can try using an OBD-II scanner to retrieve the specific error code causing the check engine light to come on. This will give you a better idea of what the issue could be.

Check to see if your gas cap is tightly sealed. A loose gas cap can often cause the check engine light to come on.