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Old 12-30-2008, 04:36 PM   #1
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Error code---check engine light

Anybody know what PO155 error code would mean on a 2003 Wrangler? Any advice would be much appreciated.

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Old 12-31-2008, 09:48 AM   #2
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Check your gas cap, make sure its tight.

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Old 01-04-2009, 08:32 PM   #3
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Enter " PO155" into any search on the net and you will have plenty of answers. The numbers are universal for any brand vehicle from what I have been told and have not seen anything to prove other wise .
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Old 01-05-2009, 04:26 AM   #4
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o2 heater circuit bank two sensor one sounds like youll need to check connections at the o2 sensor and possibly get it replaced
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Old 01-05-2009, 09:42 AM   #5
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Thank you for giving the answers to my wife. I could not get to the internet.
The O2 sensor is what I figured it was.
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Old 01-05-2009, 01:27 PM   #6
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no prob

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