Why is my Audi A3 displaying a check engine light?

I recently noticed that my Audi A3's check engine light has turned on. What could be causing this issue and how can I fix it?

The check engine light can indicate a variety of issues with your Audi A3. It's best to get it checked by a professional mechanic to diagnose the specific problem.

Common reasons for the check engine light to turn on include issues with the oxygen sensor, catalytic converter, or spark plugs. It's important to address these issues promptly to avoid further damage to your vehicle.