New 2009 2010 BMW Z4 - ZPOST - View Single Post

Dooker · 02-11-2023, 06:06 PM

Hello,

I have been troubleshooting P0174 (lean bank 2), P0100 (MAF A circuit) and P0113 (air intake circuit A high).

I have cleaned and ultimately replaced the MAF sensor with OEM. No change. I have checked the pins in the connector, they are in good condition.

I have smoke tested the intake twice. I cannot find any leaks. The inlet ducts have been removed and inspected and no cracks tears etc. When performing the smoke test and I remove the oil fill cap, I do have smoke coming from the oil fill port. I’m not sure if this is normal or not.

Any other ideas or things I need to check?

02-11-2023, 06:06 PM	#1
Dooker Registered 0 Rep 1 Posts Drives: 2011 E89 Join Date: Feb 2023 Location: Indiana iTrader: (0)	Chasing Lean Code bank 2 and MAF codes Hello, I have been troubleshooting P0174 (lean bank 2), P0100 (MAF A circuit) and P0113 (air intake circuit A high). I have cleaned and ultimately replaced the MAF sensor with OEM. No change. I have checked the pins in the connector, they are in good condition. I have smoke tested the intake twice. I cannot find any leaks. The inlet ducts have been removed and inspected and no cracks tears etc. When performing the smoke test and I remove the oil fill cap, I do have smoke coming from the oil fill port. I’m not sure if this is normal or not. Any other ideas or things I need to check?
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