Originally posted by MapOfTaziFoSho:
Ok I pulled the codes P0171 AND P0174.
I was also able to see that bank 1 #1 o2 sensor was giving very sporadic readings. Same thing with bank 2 # 1 o2.

So I am gonna go ahead and replace those, but which sensors are those??



I though when you have both codes PO171 and PO174 together, it meant there was an intake/vacuum leak.

I dont think your O2s are both bad at the same, they are giving odd readings because unmetered air is getting into your engine, and that is messing them up.