For some time now I have felt a slight jerking at approx. 1600 – approx. 2000 rpm, mostly shortly before switching. The switching processes themselves run smoothly. I hold the accelerator pedal position, see slight speed fluctuations in the DZM. With the trailer on it the jerking is more felt. Before the holiday trip I had read out with VIDA. I don’t know the code anymore. But it was a mistake in the fuel ventilation system behind The error occurred more frequently. MKL doesn’t work. After the deletion, the jerking was gone, and then it reappeared later. Rereaded again, again the error. Deleted, no jerking. As far as I have so good. Here on vacation only Tourque with me. As written, the jerking became noticeably stronger on the last kilometers. Read out, error code P0440. Deleted, but no improvement. It doesn’t matter, by the way, whether the automatic, or I switch manually. Any idea n? Can the wrinkling be triggered by the error? The INet means “no” or doesn’t count it with the symptoms. When I’m back, I want to look at the ventilation system and clean the DK.