I have a 2002 Passat 1.8T. My check engine light is on for 2 years.
So far they replaced catalyt. converter(twice) and O2 sensors (twice) and spark plugs and coils.
And I am stil getting P0422 and P0441. Car is running fine. It has no problem.
The light comes back sometimes the same day, sometimes next day.
Do you have the same experience? Any solution?