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1997-2006 Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator Discussion

code p1131

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Old 01-01-2007, 06:55 PM
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melly82502
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Angry code p1131
i have my engien light come on i got it ran but the code came up p1131 and i dont know what it is,and if i can fix it myself.
 
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Old 01-02-2007, 07:29 AM
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This is the upstream hot O2 sensor/bank 1 running lean. How's your idle? Check wiring to the sensor. Try cleaning the MAF sensor.
 
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