What causes the check engine light to turn on in an Audi A7?

I noticed that my check engine light has been on for a couple of days now. What could be causing this issue in my Audi A7? Is it a serious problem?

There are several reasons that could cause the check engine light to turn on in your Audi A7. It could be a faulty oxygen sensor, loose gas cap, or even a more serious issue with the engine. The best course of action would be to take your car to a certified mechanic and have them run a diagnostic test to determine the exact cause.

I've had this issue with my Audi A7 before, and it turned out to be a malfunctioning mass airflow sensor. It's a common problem in these cars, but it's not something you should ignore. Get it checked out as soon as possible.