What causes the engine malfunction light to turn on in an Audi A6?

I just noticed that the engine malfunction light has turned on in my Audi A6. It's never happened before, and I'm worried about what could be causing it. Can anyone provide insight on what might be the issue and how I can fix it?

The engine malfunction light can be a result of various issues, such as a faulty oxygen sensor or a loose gas cap. Diagnosing the issue can be difficult without proper equipment, so I recommend taking it to a certified mechanic for a proper diagnosis.

In my experience, the engine malfunction light turning on in an Audi A6 is often caused by a faulty ignition coil. It's a relatively easy and inexpensive fix, so it's worth getting it checked out sooner rather than later to avoid further issues.