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Discussion Starter #1 (Edited)
OK... I am new and not a real DIY guy. I need to know where the M:read:AF is located in my 03 330xi? I received advice on this site based on a trouble code (P1500). I was told to clean my MAF sensor.

I also received codes PO175 and PO172. Various opinions on this site. I would like to see if it is a DIY project. Any ideas would/suggestions/directions/ would be appreciated.

No power/acceleration problems and the vehicle runs fine although my mileage dipped a hair (25.3 MPG to 25.1 MPG....almost always highway). It starts fine, runs smooth and does not lose any power or stall.
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The MAF sensor unit is in between your air filter box and throttle body. The part you clean is a very fine wire so be very gentle.
 

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Discussion Starter #3
I also received codes PO175 and PO172.

Any ideas on these codes. I believe the codes say that the car is running to lean or rich. Since it does not have any power loss, I would hazard to say that it is running too rich. The codes came from Advance Auto Parts......

Suggestions on a repair or an opinion?
:confused:
Thanks,
Cesar
 
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