What causes the engine light to turn on in an Audi A4?

I recently noticed that the engine light in my Audi A4 turned on. What could be causing this and how can I fix it?

The engine light turning on can indicate a variety of issues such as a faulty oxygen sensor, loose gas cap, or even a more serious engine problem. It's best to have it checked by a mechanic to diagnose and fix the issue.

It could be a minor issue such as a loose gas cap, but it's always better to err on the side of caution and have it checked out by a professional. This will ensure that any potential problems are addressed and resolved before they become more serious.

Do not ignore the engine light as it could be a warning sign for a bigger issue. Take your Audi A4 to a reputable mechanic for a diagnostic test and necessary repairs.