My car is back in the shop. This time, it’s for a new catalytic converter.
The way Porsche deals with these “engine light” codes is very logical: they don’t look for the actual problem, but instead, they have a manual that says to replace such and such first, and then if the same code later appears, then replace the next thing, and if it appears again, the next thing, and so on. Since Porsche has a very high mark-up, I suppose they can get away with this and still make money (but since I’m under warranty, they make no money on me!). This is the third time I’ve had the same code. So far, they have replaced one “pre” and one “post” O2 sensor. The third time the code comes on, they replace the catalytic converter. I thought that maybe by this point, they would run out of things to replace with this code, but Gunter, the head mechanic, informed me that there are a total of four O2 sensors (two pre and two post), so I could be back two more times before they replace the last item in this code chain!
I hope it was the catalytic converter.