How to troubleshoot the check engine light on Audi A3?

I bought an Audi A3 and the check engine light keeps turning on. What could be causing this and how can I fix it?

The check engine light can be caused by a variety of issues, such as a loose gas cap, faulty oxygen sensor, or a more serious engine problem. I suggest getting the car diagnosed by a mechanic to pinpoint the exact cause of the issue and then getting it fixed promptly to avoid further damage and potential safety hazards.

In some cases, the check engine light can be triggered by a faulty sensor. I recommend getting the car scanned for error codes and replacing any faulty sensors. If the light continues to turn on or blink, it could indicate a more serious issue that requires further investigation by a professional mechanic.