Why does my Audi's dashboard show different error codes than my mechanic's computer?

I recently noticed that my Audi's dashboard is displaying a different set of error codes than what my mechanic's computer is showing. How can this be possible and which one should I trust?

There could be several reasons for this discrepancy. It is possible that your mechanic's computer is not up-to-date with the latest software updates from Audi, resulting in different error codes being displayed. Or, the dashboard's error codes may be more general while the mechanic's computer may provide more specific codes. It is always best to trust the diagnostic tool used by your mechanic as they have the specialized equipment and knowledge to accurately diagnose and repair your vehicle.