I replaced my stock cats with the berk high plow resonators and after everything was installed I recieved a p1148 code. I realize this is bank one open loop short circuit/failure. The O2 sensor for the exhaust manifold. My question is, if that is the case is it because I sprayed wd40 near it? Could it still be wet, or because I used an impact wrench in its vicinity? Is it possible that it needs to cycle a few times before it goes away? The other thing I figure is that the O2 is screwed and I need a new one. I have checked the wiring and the connections. I do not see anything wrong with either. Is there a fuse that could have blown from them getting soaked in wd 40? Thanks for any suggestions/help

 

Did u have your battery disconnected during the install? I would try to reset the ecu before anything else. It is very possible u messed up the o2 sensors during install because of the impact gun. The wd40 shouldn't have messed anything up as long as it was sprayed on the outside. I soaked both sides with pb blaster when I installed my test pipes. But I was very careful with the bank 1 o2 sensors during the process for this exact reaso . U never know though, it might go away I'm a couple hundres miles

 

This happens to some folks when they install HFCs. There will be a code for some and not for others.

If you don't plan on getting a tune, I'd just install a fouler on each side to help eliminate the code.

 

the code is not coming from the cats its from the exhaust manifold. I have heard that the battery disconnect on these cars doesn't do anything, because like your wife they remember everything! I tried to do the gas pedal reset, but the car won't do it since the code is displayed

 

get the obd2 torque for your computer you will be able to read, do tests, and erase codes is only $25 on ebay

 

I have a bully dog now that reads the codes and deletes them. I do always like second choices though. I looked this up and was wondering which one is the best, because there were quite a few on ebay. Thanks

 

i cant get my code to go off either. i have hfc (not test pipes) and the install was done by a reputable shop, not me. i guess ill get some non foulers for the next time i get under there

 

which code are you showing? From what I have read my p1148 is the passenger side header o2 sensor, which has nothing to do with the cat sensor.

 

good point. i honestly have not checked, which seems stupid, but it started coming on just a couple days after my HFC install. i have gotten it to go away for a day or so with an ECU reset with the gas pedall, but it comes right back

 

definitely trace it first then you can figure it out.

 

I bought a used header o2 sensor. We will see if that fixes it

 

After receiving the wrong sensor and waiting for a new one I replaced it and the cell cleared. So it was the passenger header o2.

 

was it a pain in the butt replacing the O2 sensor?