10th Jun 2020, 21:47

Did you find what the problem was? I have a Cayenne Turbo 955 (first gen) and it started having the same issue (although you didn't really describe how it feels, more like what has gone wrong by looking at the diagnostic tools). The problem was wrong oil used before me and the valve lifters got stuck on some part of the engine, I don't remember which one. No one could help me, they offered me a new engine, which was out of question.

So I did an engine flush for the oil, and when changing the oil we managed to put more of it into the engine (because it was clogged, it could only get 7.5l instead of 8l, if I remember correctly, maybe it was 7l instead of 7.5l). Now it is almost 100% good. I have seen a lot of Carrera's with such problems, and I wouldn't be surprised this is the same problem with your 6L W12.

I used 0w40 Marly ceramic oil (even if I think they are the best lubricant manufacturer in the world, I think you can't go wrong with some Redline, Motorex...).

Best regards.