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Brad
Brad, Jeep Dealership Tech
Category: Jeep
Satisfied Customers: 7993
Experience:  19 Yrs Chrysler/Dodge/Jeep. ASE Master (L-1) Certified
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Intermittent p0031, p0037, p0051 and p0057. All o2 sensors

Customer Question

Intermittent p0031, p0037, p0051 and p0057. All o2 sensors replaced with oem. CEL will go off for 2-3 days then come back on. 2005 Wrangler X.
Submitted: 1 year ago.
Category: Jeep
Expert:  Brad replied 1 year ago.

Good afternoon and welcome to JustAnswer!!

Have you allready asked this question before?

Expert:  Brad replied 1 year ago.

http://professional.justanswer.com/chat/index/d784653b386a4b8ba0d0f09df7ab2a7c

Customer: replied 1 year ago.
No I have not
Customer: replied 1 year ago.
I cannot open the above link
Expert:  Brad replied 1 year ago.

Ok thanks, ***** *****

I attached the wiring diagram for the O2 sensors... I have found the wiring rubbed in the loom which will cause all the codes... The Heater Control will have 12v to the O2 sensors, and you can check the ground... But if you tear out the harness and none of the wires are shorted then I would replace the PCM..

I hope this helps,

Brad

Customer: replied 1 year ago.
I replaced PCM and codes came back. Possible for PCM to be bad right out of the box? PCM came from Cardone.
Expert:  Brad replied 1 year ago.

I would double check the wiring along backside of the engine because I have found the heat damages the wiring or it rubs against the body and shorts out.. If you have tore out and Ohmed the wires to the PCM and they are all .001 then I would get a PCM from us(dealership) to ensure a good quality PCM..

Customer: replied 1 year ago.
All wires and grounds have been checked and are ok. Could one bad O2 cause the issue?
Customer: replied 1 year ago.
Ok I will try one from the dealer. Thanks
Expert:  Brad replied 1 year ago.

No not just 1 bad O2 will cause these low circuit codes.. If the O2 sensors are new OEM and the wiring is fine then a dealership PCM will resole your issues...

Glad I could help and thank you for the positive rating,

Brad