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Old 12-04-2015, 04:53 PM
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Please help p0155 and p0138 07 jk

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.

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Old 12-18-2015, 04:38 PM
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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

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Old 12-19-2015, 11:47 AM   #3
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Can't help you with this one but I am watching to see if you get this resolved. If I come across something I will let you know.
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Old 12-19-2015, 01:07 PM
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Quote:
Originally Posted by JTPhoto JK View Post
Can't help you with this one but I am watching to see if you get this resolved. If I come across something I will let you know.


Thank you
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Old 12-19-2015, 09:06 PM   #5
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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.
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Old 12-21-2015, 02:15 AM
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Ok I will thank you
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Old 12-22-2015, 01:47 PM
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So I used my super chip to read the codes today, I was using my scan gauge before and my super chip gave me 5 codes. P0155,P0135,p0138,C123F and C1240. Does this new info help?
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Old 12-22-2015, 04:53 PM   #8
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C- codes are for your steering angle sensor. And you have the three O2 codes. I still suspect you have some damaged or corroded wiring..
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Old 12-22-2015, 11:13 PM
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Any ideas what to check? I checked the female ends and I couldn't see anything wrong

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