well i switched my O2s to see whats causing my P0135 code to come on every now and then in this cold weather and its still the same code, so i know its not any of the O2s themselves. however i checked at the extension on both sides and they both had power to them, could this be possible, however it would still screw up the heater function? the code affects nothing else, just comes on every week or so later after i delete it. like i said, i swapped the O2s around, still got it, and also am receiving 12 volts to the ends of both extensions. any ideas?

 

Try switching the extensions from side to side and see if the code follows.

 

that was my next plan. however it sucks because it take a good week or so to get the code to come back on.

 

Look at it this way, you don't have to work on it for a week, just drive and wait.

Intermittents are the hardest to track down.

 

lol. true, but im sick of dealing with it, i want it gone.lol. if by chance the extensions dont change anything, what am i looking at here for a source of the problem? what would cause it to do this if its not the O2s or extensions? factory wiring, in which case, its fixed how...lol