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-   -   I am getting P0171/P0174 codes, but I do not have any vacuum leaks. What could cause this? (http://forums.pelicanparts.com/101-projects-discussion-forum-bmw-3-series/760998-i-am-getting-p0171-p0174-codes-but-i-do-not-have-any-vacuum-leaks-what-could-cause.html)

KrGowri (guest) 07-15-2013 06:25 AM
After replacing the gasket, I am getting P0171/P0174 codes, but I do not have any vacuum leaks. What could cause this?

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This post was auto-generated based upon a question asked on our tech article page here:

Nick at Pelican Parts 07-15-2013 06:25 AM
Low fuel pressure or a bad MAF can also cause lean codes. Do you have an exhaust leak because that can also cause false lean codes

- Nick


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