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 Post subject: Error Code P0138
PostPosted: Tue May 18, 2010 6:04 pm 
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Joined: Mon Jan 07, 2008 11:30 pm
Posts: 13
Location: Virginia Beach, VA
My CEL came on and it gave me a code of P0138 (HO2S Circuit High Voltage Bank 1 Sensor 2). I researched it a little can found that it could be the O2 Sensor after the cat converter. I was just wondering if anyone else has ever had this error code and what they did to fix it. Thanks. :lol:


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 Post subject: Re: Error Code P0138
PostPosted: Tue May 18, 2010 6:59 pm 
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Location: Seattle
I believe you are correct that this is the O2 sesor after the cat. If your jeep is generally running fine, I'd strongly suspect a bad O2 sensor. How many miles on your girl? O2 sensors should probably be changed after 100k miles.

o2 sensors are around $30 a piece so if you've got high mileage, it probably wouldn't hurt to replace it, if not all four.

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 Post subject: Re: Error Code P0138
PostPosted: Wed May 19, 2010 3:35 pm 
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Location: Virginia Beach, VA
Have right around 84,000 miles right now. Is it difficult to change this sensor out?
Thanks.


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 Post subject: Re: Error Code P0138
PostPosted: Mon May 31, 2010 9:12 pm 
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Location: Australia with the Kangaroos
I have had this for the last year on mine, they replaced the O2 sensors twice, then they said they had another vehicle with the same problem, and they had to replace the PCM. ($3000.00 Australian!!!!) On a side note, in the first 6weeks I had the car back in 2004, the same O2 sensors failed twice, replaced under warrenty then, but this PCM as a failure causing the CEL and codes???????.

I have not had it replaced PCM yet.. :furious:

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