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Unread 05-06-2010, 11:52 PM   #1
bigwyrm
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2003 TJ Wrangler 
 
Join Date: Mar 2009
Location: alabama
Posts: 4
code po157

I ran a code reader and it came up with po157, any ideas what it is?

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Unread 05-06-2010, 11:54 PM   #2
USAFRecon
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Join Date: May 2008
Location: Fredericksburg, VA
Posts: 1,407
Try the search for now on

O2 sensor input voltage below normal operating range.

Lower bank 02 sensor needs replaced

http://www.jeepforum.com/forum/f9/tj-forum-faq-615132/

http://www.jeepforum.com/forum/f9/fa...-codes-778086/
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Unread 05-06-2010, 11:55 PM   #3
Buffalo99
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2006 TJ Wrangler 
 
Join Date: Dec 2009
Location: SoCal
Posts: 57
P0157 (M) 2/2 O2 Sensor Shorted To Ground Oxygen sensor input voltage maintained below normal operating range. I'm pretty sure that's indicating an error for the downstream sensor on bank 2 (cylinders 4-6). But, before you take my word for it... I'd double check just to make sure.

Hope that helps.
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Unread 05-07-2010, 11:59 PM   #4
bigwyrm
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2003 TJ Wrangler 
 
Join Date: Mar 2009
Location: alabama
Posts: 4
thanks guys!

I appreciate it!
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