thanks for the fast response.
Yes the dpf was blocked and the NOx sensor a lot of soot.
I cant take it to the dealer, the vehicle was imported by me, so no warranty and no service for 5 years or a $10.000 fee to get service.
I bought a new dpf. I saw it was part number 68243370AB, so I guess something was fixed from AA to AB. I know there is a new part AC. so I guess something else was fixed from AB to AC.
Do I need to do something before a install the new one?
No ultra low sulphur diesel available in my country