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  #1  
Old 07-23-2009, 12:15 PM
bloozeman2002 bloozeman2002 is offline
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Join Date: Jul 2009
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Default Hello. New member question.

Hi all,

I have a 2004 Ranger 2.3. The check engine light came on. I had Murrays Auto Parts check the code, and it came up PO171. They told me that it is one of the oxygen sensors, and the description is lean bank 1, and the Haynes manual says the trouble code is Fuel System at adaptive limits bank #1.

The truck seems to run fine. Can anyone help me decipher this?

Thanks in advance for any help or suggestions.
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Old 07-23-2009, 01:26 PM
STL STL is offline
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Not sure what could be my manual says System adaptive fuel too lean (bank 1)

My guess if it is the o2 sensor it would be the up stream one
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Old 07-24-2009, 06:33 PM
Jay FX4 Jay FX4 is offline
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Where are you from, Bloozeman?
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Old 08-02-2009, 09:37 AM
IKEBREWER IKEBREWER is offline
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Mass air flow?
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