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Aug 1, 2012 | 9:19 PM

ravichandan

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Need Help !!!

Need help!!

I have chevy cobalt 2009 LT and engine check light was on and trouble code is P0171.. I did clear the code using OBD scanner.. want to know whether the code will appear back if problem still persists and need help to take next steps

Thanks !!

Aug 2, 2012 | 9:47 AM

oldchevy

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From: Miami, FL.

If the problem persist the code will come back. P0171 is a lean mixture bank1. Possible causes are dirty MAF sensor, vacuum leak, PCV valve, EGR dirty, fuel filter etc.

Aug 2, 2012 | 12:21 PM

ravichandan

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Thank you for your reply!! I will start by replacing MAF at Firestone...hope that resolves the issue... I will keep you posted

Aug 2, 2012 | 2:17 PM

kevinkpk

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From: kevinkpk

Quote:

Originally Posted by oldchevy

If the problem persist the code will come back. P0171 is a lean mixture bank1. Possible causes are dirty MAF sensor, vacuum leak, PCV valve, EGR dirty, fuel filter etc.

O2 sensor.