1997 Nissan Altima P0400

1997 NISSAN ALTIMA
2.4L • 4 CYL • 2WD • AUTOMATIC
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OHYEA
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I just recently gotten the code p0400 yesterday but i also had the code p0171 for like a week, I have been searching up ways to fix this and says clean the egr valve now if I do this is it possible for both codes to go away?
Jan 29, 2015 at 4:22 PM
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HOMER1967
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you need to clean the egr passages not just the valve for the p0400 and it is not related to the p0171 which is a lean code and in you case most likely a mass air flow sensor or leaking intake gasket.
Jan 29, 2015 at 4:40 PM
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OHYEA
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Ok thanks, because the p0171 code comes and goes so maybe it isnt something major?
Jan 29, 2015 at 4:46 PM
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HOMER1967
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your welcome.most likely it is the mass air flow sensor.but could be the intake gaskets.
Jan 29, 2015 at 4:49 PM
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OHYEA
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Hello, I cleaned out the egr and passage ways like you said and it worked, i also found out what was causing the p0171 code and it was the air tube that connects the throttle body and the MAF it was all ripped up underneath, so I put duct tape around it to seal it until I get a new one. Wanna thank you again for helping me. :)
Feb 3, 2015 at 12:55 PM
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HOMER1967
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you are very welcome,i am glad that you got it fixed.thank you for choosing 2 carpros.
Feb 3, 2015 at 4:35 PM