2011 335i e93 Lean code p0171 help!

ETM3 · 03-15-2017, 09:14 PM

Hi all,

I've been getting the p0171 lean code and believe it is due to the mechanic forgetting to put on the gasket connecting the upper and lower intake tubes. I opened it up and there's no gasket in between and the connection is loose? It's only held on by one star screw and the other side is loose? Can anyone confirm their intake connection looks like this? There's gotta be a gasket in between. Check out the photos below, specifically the connection where the star screw is in the middle of the 2nd pic. Does yours look like this? It's gotta be sucking in air from there.

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weehe126 · 03-16-2017, 07:31 AM

Well take it off and see if there is a gasket...it literally takes 5 minutes. And if you did, I'm not sure why you didn't take a pic of that. There is a band type gasket that attaches to the lower part, then the top one slides over. That one screw is all you need as this part only sees vacuum not boost.

03-15-2017, 09:14 PM	#1
ETM3 Private 84 Rep 77 Posts Drives: 2011 Jerez Black E90 M3 Join Date: Apr 2015 Location: Los Angeles iTrader: (0)	2011 335i e93 Lean code p0171 help! Hi all, I've been getting the p0171 lean code and believe it is due to the mechanic forgetting to put on the gasket connecting the upper and lower intake tubes. I opened it up and there's no gasket in between and the connection is loose? It's only held on by one star screw and the other side is loose? Can anyone confirm their intake connection looks like this? There's gotta be a gasket in between. Check out the photos below, specifically the connection where the star screw is in the middle of the 2nd pic. Does yours look like this? It's gotta be sucking in air from there. View post on imgur.com View post on imgur.com Last edited by ETM3; 03-15-2017 at 09:19 PM.. Reason: Photos added
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03-16-2017, 07:31 AM	#2
weehe126 Brigadier General 1161 Rep 3,189 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	Well take it off and see if there is a gasket...it literally takes 5 minutes. And if you did, I'm not sure why you didn't take a pic of that. There is a band type gasket that attaches to the lower part, then the top one slides over. That one screw is all you need as this part only sees vacuum not boost.
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