What exactly is "Sensor Blower" in HVAC system? - Bimmerfest - BMW Forums

Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series & 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

Thread Tools Display Modes
Old Yesterday, 02:42 PM
PancakeBimmer PancakeBimmer is offline
Officially Welcomed to the 'Fest
Location: Portland, OR
Join Date: Jul 2011
Posts: 717
Mein Auto: 02 BMW 325i
What exactly is "Sensor Blower" in HVAC system?

For the love of all holy I can't find out what "Blower sensor" is. I read codes from HVAC/IHKA using BMW Scanner and only error it came back with is 'Blower Sensor" open circuit.

For the record, it is not FSU. This was my first guess too. Blower worked fine with resistor that was in the car, although jackass that installed it used only one screw to keep it place. I then replaced FSU with fairly new FSU from my car. The same error is still there, and my car never had this error with this FSU.

So any ideas what else "Blower sensor" might be within HVAC/IHKA system?

Edit: Ohh and I also tried swapping out black box air quality sensor on fan shroud.
Cheap people deserve to pay twice

Volcano Red M3 Bumpers, Fenders, Quarter panels 19" 8.5ET35 225/35 | 9.5ET35 255/30 Custom Quad Exhaust Good old M54

Last edited by PancakeBimmer; Yesterday at 02:43 PM.
Reply With Quote
Old Yesterday, 09:03 PM
scottjoh scottjoh is offline
Officially Welcomed to the 'Fest
Location: Los Angeles, CA
Join Date: May 2006
Posts: 501
Mein Auto: 1999 323i
What exactly is "Sensor Blower" in HVAC system?

Sensor blower is in the HVAC control unit in the dash. There are little slots for air to be sucked in through for the cabin temp sensor. There is a small blower in there to move the cabin air in and across the sensor.
Reply With Quote

See More Related BMW Stories

Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series & 4 Series > E46 (1999 - 2006)
Today's Posts Search
Thread Tools
Display Modes

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

Forum Jump

All times are GMT -7. The time now is 09:57 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
© 2001- VerticalScope Inc. All rights reserved.