Ok heres the background, I just did a full long tube header from stainless works with high fow cats and x pipe, into borla stingers.

I tried to splice the rear o2's into the front connectors by using my exhisting o2 sensors and just pluged the rears, (if this didnt work it didnt matter because at 80k i was due for new o2's anyway.)

Ok so, the splice seemed to not work, car was running pig rich. and I threw codes
p0134
p0140
p0154
p0160

and some weird codes p1133, and p1153

The rears obviously arent pluged in so those codes are obvious, and the front splice didnt seem to work so fine...

Now the problem, I bought the o2 sensor adapters from racetronic and brand new rear o2 sensors for the front banks. After running my car for about 40 mins the engine light came on, I suspected it was the rear o2 code because they are still pluged. But no, it was a sensor inactive code for p0134 and p0154... The rear codes arent even showing and they arent even pluged in?!?!?!?!


Has someone had experience with this and please help me, after putting the new sensors in it runs much smother, and doesnt reek of gas, so I assume they are doing there job, but why are those trouble codes still present!

 

well i do believe i found the culprit, fuse 15 was blown.... so next time I drive it i will see if the codes come back.

 

Means you probably have a wire grounding out somewhere. Most likely the heated O2's. Look for wires that got too close to the heat.

 

I bet it was when I spliced the connectors together. the wires werent melted or anything along the run, but i hope this fixes it. Thank you