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what is this code

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Old 03 Dec 2008, 09:17 pm
Fresh Cruiser
Join Date: Dec 2008
Posts: 2
Angry what is this code

Hi to all the Cruisers!

I have a 2006 2.4l cruiser, and my engine light came on, I had it checked at auto zone and they gave me the code Po138. Can anyone explain if this code is sensor codes for, before and after catalytic convertor? The read out I got from auto zone also said , engine miss-fire condition repair, low fuel pump or pressure regulator, fuel pressure very high,oxygen sensores defective, fuel system runing rich or lean check other codes first. I know these are possibilities, where do i begin? Help please!:
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Old 04 Dec 2008, 07:48 am
Obsessed Cruiser
Join Date: Sep 2001
Posts: 27,758
Default Re: what is this code

Welcome to the forum.

I moved your post over to the tech section.

P0138 should mean that your 02 sensor needs replacing. Your particular code is for the downstream sensor which is on the left side of the catalytic converter.

Replace it yourself or have a mechanic do it for you. Then clear all the codes (disconnect the negative battery terminal for about 5 minutes) and see how it's running and if any other codes appear.
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Old 04 Dec 2008, 07:54 am
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Join Date: Dec 2008
Posts: 2
Default Re: what is this code

Thanks for the quick reponce I realy apreciate it I was lost you a life saver will post my results. Thank You agan!

Last edited by medtwo; 04 Dec 2008 at 07:59 am.
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