What causes the engine light to come on in my Audi A4?

I noticed that my engine light has turned on while driving my Audi A4. What could be the possible causes for this and how can I fix it?

The engine light can come on for a variety of reasons, ranging from a loose gas cap to a faulty oxygen sensor. It is best to bring your Audi A4 to a certified mechanic for a diagnostic scan to determine the exact cause.

One common cause for the engine light to come on in an Audi A4 is a problem with the catalytic converter. It is important to address this issue as soon as possible, as it can lead to further, more expensive damage if left unresolved.

If you recently had your Audi A4 serviced or repaired, the engine light may have turned on due to a loose or damaged sensor. In this case, it is recommended to return to the mechanic and have them recheck their work.