Hello all, I am the owner of a BMW E 90 with a N43 B20 A engine. The car ran 119,000 km and from bj 2008. Recently the NOX sensor was changed because the was defective. They then also made the same fuel low pressure valve and oil pressure switch, because they were also in the fault memory. But now to my current problem. A good 14 days ago the car in the stand was totally unround and it also went on the control light. Then I immediately got the car out of it. cht and then read out with a launch tester. Burners on the 3 cylinder. Errors were then deleted and are to that in terms of quietness so it did not happen again. Now I have the error Lambda controller 2 with the error code 002C7F as in the heading. The indicator light goes on near a certain time and the error always comes again. A colleague and I then read out with Carly a few live data with the result: Lambdasollwerte Gruppe 1 : 1.000 Lambdasollwert Group 2 : 1.000 Lambdawert vor Kat Bank 1 : 2,424 Lambdawert vor Kat Bank 2 : 2,142 Lambda Adaption Sum mul. and add. Group 1 : 8,594% Lambda Adaption Sum mul. and add. Group 2 : 4,688% When driving on the Autbahn, I noticed that he always has a jerker in it when driving constantly. However, the speed does not play a role. The steering chain was also made before about 3000 km. If someone has already looked for this here then bi I would like to apologize that I wrote it again and a link that will help me further would be great. Otherwise I just hope that someone here can tell me what that can be or how to do it best to fix the error. I also say thank you very much for the answers. MfG Sebastian