O2 Codes P0031/P0037/P0051/P0057 - Page 5 - JeepForum.com
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Dual Color LED Light Bars White/AmberFS: 2007-2013 Jeep Wrangler "HALO" Angel Eye KitTHE NEW! VANCO DUAL MODE 15/16″ Big Brake Kit w/Bla

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Unread 02-25-2012, 09:01 PM   #61
98xjroks
Registered User
2006 LJ Wrangler 
 
Join Date: Feb 2011
Location: Wasatch, UTAH
Posts: 75
Update* I replaced the bosch sensor for the ntk/ngk sensor and the P0152 code hasn't been back within 150 miles so far so good.

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Unread 06-10-2012, 10:18 AM   #62
jpross
Registered User
2006 LJ Wrangler 
 
Join Date: Sep 2004
Location: Charlotte, NC
Posts: 107
Btw, i know this is an old post, but after having my pcm and spark plugs replaced, i was still getting codes...i bugged the dealer and told him that i suspected the cat closest to the manifold. They tested it and said sure enough and replaced it for free under the 8/80 warranty. Everything has been working great since then...i also noticed a significant power increase... Which is awesome!

So it turned out for me the problem was a combination of three things possibly interrelated... Pcm, spark plugs, cat. Theoretically it is possible the pcm killed the spark plugs and the cat.

Hope this help anyone else with these issues.
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Unread 06-10-2012, 01:53 PM   #63
_KONG_
Registered User
2005 TJ Wrangler 
 
Join Date: Aug 2009
Location: Eastvale, CA
Posts: 1,366
Problem fixed! Ended up being a bad PCM. Ordered a rebuilt one online and all is well
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