Moin. It’s about the following vehicle. Mercedes Sprinter 163Ps 1314/BHS 188000km mileage BJ 2010 The last 1 1/2 years all injectors were renewed one after the other. The last two only 5 weeks ago. These were leaking and sprayed diesel to the top. After that there were charging air problems and we found that the intake bridge was leaking and a standing bolt was torn off from it. Everything repaired. Complete suction and AGR cleaned. After that, unfortunately, it is always in the cold start. Now we have found that AGR always stands at 100%, so it is always fully up and no longer adjusted. In the cold start it should only be 20-30% opening. The AGR valve does not clamp, the adjuster is not broken, the AGR cooler is tight. Has someone had an idea about this and has had the same problem before? We believe this by now due to the too high pressure, by always fully open AGR, it has made the suction pressed / leaked!?! Important would be e vll still that the first owner then drove to Mercedes and they deactivated the NOX sensor because there were probably problems with it!? But is everything Tüvkonform and the ASU was no problem last year. Thanks and greetings