Thank you for your comment. Unfortunately I can't remember the resistance of this specific sensor. The sensor in itself could be faulty indeed, but I would try to disconnect the EGR-valve and see how it runs. There could be an issue with the position sensor, etc, which tricks your diagnostics. I might make an update as the customer of this car is coming back next week for a replacement of the EGR-valve. She's been driving it for several months now without any issues apart from the check engine light that's on since I disconnected the EGR.

In general this is a short history in a month with the car. Worked well while driving, jerked when idling. Errors were 16786 and 17586. Throttle valve, map sensor, egr were cleaned... After replacing the first o2 lambda probe. Error 17586 and frequent jerking at 15s disappeared. Error 16786 and jerking at 60s remained. Egr cleaned again, tested. Ordered a new egr and compared it with the current one, exactly the same parameters on the mutlimeter. New and I didn't install it, sent it back. In the meantime, he performed regular services, replaced the spark plugs, filters... Nothing changed, and the error 16786 remained, which appeared after erasing and driving for about 10 km. Then I accidentally changed the gasket on the throttle. Maybe a subjective feeling that it goes a little better. Drove 40km and error 16786 appeared again (which lasted for a month) After erasing and driving for about 30km, a new error 16804 appeared, another erasing and another 30km again error 16804. Erasing again and driving for about 30km didn't throw out a single error. At rest it works fine, only that one twitch at about 60s. I'll see tomorrow, after a few more kilometers. I have the impression that it is a vacuum leak, and that at that moment it jerks. The only good thing and the hope that the problem will be solved is that in the last 3 test drives there are no more errors 16786 :)