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P0171 & P0174 Lean Codes

shortysmash

By shortysmash,
in 96-2004 R50 Pathfinders

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shortysmash NPORA Regular

shortysmash

Posted
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I have a 01 pathy and Im getting a p0171 lean bank 1 and p0174 lean bank 2 codes. i wanted to get some opinions on as to what might cause that. I saw online that it might be a dirty or failing maf sensor. but i havent tried cleaning it or anything. I havent had any engine problems that i can tell. i also read it could be O2 sensor but at 100 roughly apiece i dont want to shell it out until i have a pretty close idea as to what it might be

thanks

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Thunderbolt NPORA Veteran

Thunderbolt

Posted
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I would get a can of MAF cleaner or electrical cleaner and see if that works and if you are using a K&N filter... scrap it. The oil off the filter is messing up the sensors in the maf.

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  • 7 months later...

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