[bmw001]

Hi guys,
I get SES light and P0174 ( lean mixture bank 2 ). Car runs relatively well, but hesitates when pushed hard.
Very hard to diagnose, could be the MAF. Would any of you be kind enough to let me borrow your MAF for few days? I live in lower Fairfield County, CT ( close to NYC ) and drive a 2004 325ci.
Thank you in advance and I'm willing to return the favor.
Dan

 

[Carmania24]

Hi guys,
I get SES light and P0174 ( lean mixture bank 2 ). Car runs relatively well, but hesitates when pushed hard.
Very hard to diagnose, could be the MAF. Would any of you be kind enough to let me borrow your MAF for few days? I live in lower Fairfield County, CT ( close to NYC ) and drive a 2004 325ci.
Thank you in advance and I'm willing to return the favor.
Dan

That is a vacuum leak. Most likely a tear in the boot connecting to throttle body (very common failure). Take a look at this thread. I'd say just clean out the MAF.
http://forum.e46fanatics.com/showthread.php?t=699464