Help with my Denali DTC codes.

Z06Electron · 03-20-2010, 06:42 PM

So the check engine is on and I have tried clearing codes. They always come and go. I get P0101, P0137, and B0229.

I can't figure out whether the 137 code is being triggered by the 101 problem or vice versa. Could the 101 MAF problem be causing a code to trip from the 137 o2 sensor because the computer is adjusting the timing from a bad MAF reading? Doesn't the computer also compensate for the o2 readings?

Any ideas whether I should focus on the o2 sensor or MAF first? I replaced the intake system, and the code still keeps coming back. It did the same thing when stock as well.

jrose7004 · 03-20-2010, 07:36 PM

There is an Other Cars Forum for this kind of thing!

Z06Electron · 03-20-2010, 08:08 PM

Quote:

Originally Posted by jrose7004

There is an Other Cars Forum for this kind of thing!

Well it will never get answered here, and since this is pretty much a universal question as it would apply to any GM vehicle with the same issue I posted in tech. I will just start replacing stuff, the question will never get answered here.

GMautotech · 03-27-2010, 06:27 PM

The codes P0101 & P0137 don't affect each other. Replace the drivers rear O2 and clean the sensors in the MAF.