Hello. For two weeks now, the engine has been running at just under 3,000 rpm (in gear 1-4) when accelerating from WITHOUT the control lights. In the 5th gear you can get up to 3,000 rpm and sometimes over it. But at the latest 3,400 rpm is also in 5th gear end. The acceleration behaviour is a bit “tough”. It is dangerous because the car has to pull off 300km every weekend and of it are about 250km highway. When overtaking or on ascents, the fear is now driving with you, since you never know whether it goes out again or not. Today the car was hardly mobile. Every time it went out at 3,000 rpm. Finally, I could drive around 30km at a distance of 2,800-3,400 rpm. In the 5th gear constant. But this is not possible. The error is not always present. The diesel particle filter has been replaced, the regeneration fluidity has been filled up and now the differential pressure sensor has been exchanged. Unfortunately, it can help without any success.