How do I troubleshoot a check engine light on my Audi A6?

My check engine light recently turned on while driving my Audi A6. I'm not sure what the issue could be and I don't want to spend a lot of money at the dealership. Is there a way to troubleshoot this on my own?

First things first, don't panic. Check engine lights can come on for a variety of reasons, some of which are simple fixes. Start by checking your gas cap to make sure it's on tight. If that's not the issue, it's best to take your Audi A6 to a trusted mechanic or dealership for a proper diagnosis. They have the specialized tools and knowledge to accurately diagnose and fix the issue.