E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Thread Tools Search this Thread Rating: Thread Rating: 1 votes, 5.00 average. Display Modes
Old 10-14-2008, 07:16 PM   #1
Registered User
Join Date: Sep 2008
Location: Massachusetts
Posts: 62
My Ride: BMW 330xi
MAF Sensor Location? P1500, PO172 & PO175 Codes?

OK... I am new and not a real DIY guy. I need to know where the MAF 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.

Last edited by faescl; 10-14-2008 at 07:17 PM. Reason: typo
faescl is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 10-15-2008, 09:28 AM   #2
Registered User
Join Date: Oct 2006
Location: Richardson, TX
Posts: 220
My Ride: 325i
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.
Attached Thumbnails
Click image for larger version

Views:	577
Size:	71.3 KB
ID:	288218  
Lbert is offline   Reply With Quote
Old 10-15-2008, 07:51 PM   #3
Registered User
Join Date: Sep 2008
Location: Massachusetts
Posts: 62
My Ride: BMW 330xi
Post 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?

faescl is offline   Reply With Quote
Old 10-15-2008, 08:18 PM   #4
Registered User
Join Date: Nov 2007
Location: Omaha-Nebraska
Posts: 3,078
My Ride: 2001 330xi
Check out my thread:
Dan99 is offline   Reply With Quote

diy, maf, p1500, po172, po175

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON

All times are GMT -5. The time now is 07:47 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
(c) 1999 - 2016 performanceIX Inc - privacy policy - terms of use