Sorry new here but need some help on my 2007 rubicon unlimited wrangler. I bought four brand new 02 sensors and I'm still getting these two codes. Is there something I'm missing. I reseted the codes drove around still get the same two codes,about 10 min after resetting the codes. I have googled and search but no threads with the same issue. I used bosh sensors I saw somewhere that the Jeeps hate Bosch. But I also saw that bosh has worked for some.
So no replies but I'll add to it and hopefully someone will give me some guidance.
I unhooked the o2 sensor connector for bank one and bank two up stream sensors and I got good resistance but only 4.1v and 1.4 volts is this good shouldn't it be 12. This was all done with key on but engine not started
O2 sensors are something that I always get from the dealer. I have had bad luck with aftermarket ones. 3.8 JK's are known for blowing up the O2 heater drivers inside the PCM but will usually set code for all 4 sensors.
I would suspect that you have a wiring problem. Start by disconnecting all the connectors and make sure they are clean and dry. You should have a intermediate connector as well as the Pcm itself. Check around the trans and at the rear of the engine for any damaged of melted wiring.