Trying to wrap my head around fault code P0430 and P0420

[KRAM36]

Originally Posted by mump

I believe I have read on here that it can only be cleaned so many times. When I first got my porsche 4 years ago, it had a rough, jumpy idle along with a code related to the MAF. I cleaned it along with the TB, which fixed it up until this summer when I was getting the codes. I tried cleaning it again, was a no-go this time.

I'll give the MAF sensor cleaning one go. I just picked up some CRC MAF sensor specific cleaner. Also got some CRC complete fuel system cleaner.

Going to change my oil, clean the MAF sensor and take a long drive.

Hope the only code it throws will be for the knock sensor. If the P0430 and P0420 come back, I'll wait for the new knock sensors to get here, install those, clear the codes and take her for another long drive.