P0431 doesn’t go away.

[Fleitipon]

So my car gave me a p0341 code. Camshaft position sensor. Replaced the sensor and same issue. I looked into the forum and I’ve seen similar issues or exactly the same issue but no one left a solution or something. My car is a 2011 Audi A4 2.0t. When the car is cold runs fine no issues. But when it starts to warm up I feel like the engine stalls at certain rpm. Around 800-900 rpm. Feels like a misfire or something. I replace the camshafts adjuster magnetic solenoid. Same problem. I’m about to replace the camshaft valve or n205. To see if something changes. What else it could be? Maybe the timing chain? Or the tensioner ? Like I said before. No one posted a solution or at least a partial solution to this.

[Fleitipon]

update. I disconnected the cam magnetic adjuster and the car did not showed the issue described above. It just gave me another check engine light code, obviously, since I disconnected that part. The car seems to runs fine without it. And I thought that was the problem, I replaced that part with the n205 variable timing solenoid as well. But for my surprise the problem did not go away. And as soon I connected the adjuster solenoid the car started making a louder noise. not that bad but I can notice the difference.

[Fleitipon]

update number 2. I decided to replace the timing chain and the tensioner. I check the chain and it was a little stretched. not that crazy. and also the old tensioner looked kinda loose. I thought bingo! this will solve the problem. Took me 10 hours to finish the job. After several trips to home depot, autozone, etc. to get tools and stuff. Before installing the front I start the car to check. start normal as usual, I was so excited. Then put everything back together, I test drive the car and same damn problem. This is beyond frustration. But at least I have a piece of mind since I replace those parts. Tomorrow I'm going to the dealership to get a genuine camshaft sensor. I'll give it another and maybe the last shot. If this thing does not go away I will just disconnect the cam magnetic adjuster and drive it like that. At this point I don't care anymore. I did my best to try to fix it. Even the last owner took it to the dealership and they recommend to get the chain, guides and tensioner replaced. Because of the P0341 code. Luckily I just spend 500$ in parts and I did not leave my car at the dealership to get that job done for 1400$ plus taxes. That's just for labor. It would have been just a waste of money. Nothing left to add. Hopefully someone will have an answer or solution for this.