Hi All,
I got the P0431 code again today. I have a A4 3.0 2002 113K.
It looks like I am out of luck with the warranty with the dealer. Based on other treads, it looks like I need to replace the O2 sensors front and rear.
Would anyone have a DIY on the O2 sensors for a 3.0 V6? I could not find a DIY for it. The only pictures I was able to find were from the a4mods, but it is kind of confusing plus it was on a 1.8T.
Any help with be greatly appreciated.
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