I can't be of any help "testing-wise", I still need to do some other things before I can even think about ordering the parts. But if there are language barriers between english and german, I'm happy to help! :) @efe09 Wenn Du Probleme bei der Übersetzung hast, kannst Du mir gerne Bescheid ...

First you should really get the DTCs ( D iagnostic T rouble C ode) read, either at a dealer or you find someone with VIDA and a DICE/VCX or get one yourself. Especially with this message it is nearly impossible to find the errors without using a readout tool, sorry. There are simply too many possibi...