HELP before I blow up my car!

mkPOTO · 08-05-2015, 08:26 AM

Hey guys, need some help with a 275D code (either P0171 or P0172)?

Here is the back story. I was having idle issues and some crazy codes, so right away I knew it was the ICV. Replaced that and replaced a fuel sensor as further inspection lead me to find out that it was going out. I also replaced my wideband 02 sensors (front)

Even with the 02s replaced the 275D code shows up. So with this driving me nuts. I had put on a stock tune to see if the same issues were coming up and sure enough they do. So the tune is out of the question.

I went to a friends shop and he had asked me if I had replaced my battery. So I said why not, replaced it and the car seemed to be happy with it, no 275d codes. So I left the car at the shop for a few days to have some work done. Pick it up last night and BOOM, the 275d code comes back.

So here is my question..
I feel like I might have an exhaust leak and have new donut gaskets on the way. Would this cause a code?

Also, my confusion is.. when I clear codes and reset adaptation, let the car sit and turn it on the code pops right back up. Leading me to believe it is not that.

Someone help me before I blow up my car!!!!!!

Haywood · 08-05-2015, 01:19 PM

Quote:

Originally Posted by mkPOTO

Hey guys, need some help with a 275D code (either P0171 or P0172)?

Here is the back story. I was having idle issues and some crazy codes, so right away I knew it was the ICV. Replaced that and replaced a fuel sensor as further inspection lead me to find out that it was going out. I also replaced my wideband 02 sensors (front)

Even with the 02s replaced the 275D code shows up. So with this driving me nuts. I had put on a stock tune to see if the same issues were coming up and sure enough they do. So the tune is out of the question.

I went to a friends shop and he had asked me if I had replaced my battery. So I said why not, replaced it and the car seemed to be happy with it, no 275d codes. So I left the car at the shop for a few days to have some work done. Pick it up last night and BOOM, the 275d code comes back.

So here is my question..
I feel like I might have an exhaust leak and have new donut gaskets on the way. Would this cause a code?

Also, my confusion is.. when I clear codes and reset adaptation, let the car sit and turn it on the code pops right back up. Leading me to believe it is not that.

Someone help me before I blow up my car!!!!!!

So, we might be having similar problems. See my thread below.

http://www.m3post.com/forums/showthread.php?t=1158519

Also, bookmark this site. Very helpful to find out what the codes mean.

http://www.bmwforums.info/bmw-electr...es-list-3.html

Haywood · 08-05-2015, 01:21 PM

Based on your error, it looks like it's Bank 1 which I believe is the passenger side o2 sensor.

275D Oxygen sensor limit position error, bank 1

Mine is Bank 2 which replacing the upstream sensor thought fixed my issue, but did not.

mkPOTO · 08-05-2015, 02:41 PM

I replaced both, I have this feeling that my gasket might be bad and needs to be replaced. I will be picking them up and installing them on Sunday. If that doesnt work I have no clue what else to try

mkPOTO · 08-05-2015, 02:51 PM

Quote:

Originally Posted by Haywood

Based on your error, it looks like it's Bank 1 which I believe is the passenger side o2 sensor.

275D Oxygen sensor limit position error, bank 1

Mine is Bank 2 which replacing the upstream sensor thought fixed my issue, but did not.

What have you replaced so far?

Haywood · 08-05-2015, 03:38 PM

Quote:

Originally Posted by mkPOTO

What have you replaced so far?

I've only replaced the one o2 sensor on the drivers side.

http://www.rockauto.com/catalog/moreinfo.php?pk=1124632

mkPOTO · 08-05-2015, 03:56 PM

why did not both? I am going to install the new gasket this weekend. I was told that it could cause codes

BPMSport · 08-05-2015, 06:24 PM

Fault code 275D - P0172
Fault text Oxygen sensor limit position fault, bank 1
Fault description System Too Rich or Too Lean (Bank 1)

Controller pegged at MAX threshold 1.25
(K_LAM_REG_F_MAX) for time of at least 30 sec.
(K_LAM_DIAG_REG_T)

Controller limit for K_LAM_DIAG_REG_T (60s)

Action in service
1. Check fuel system for leaks, initiate test routine as indicated
2. Check exhaust system for leaks
3. Check HFM for leaks and correct operation
4. Read out oxygen sensor diagnostic data, perform both oxygen sensor test routines as indicated

mkPOTO · 08-05-2015, 08:31 PM

Quote:

Originally Posted by Mike Benvo

Fault code 275D - P0172
Fault text Oxygen sensor limit position fault, bank 1
Fault description System Too Rich or Too Lean (Bank 1)

Controller pegged at MAX threshold 1.25
(K_LAM_REG_F_MAX) for time of at least 30 sec.
(K_LAM_DIAG_REG_T)

Controller limit for K_LAM_DIAG_REG_T (60s)

Action in service
1. Check fuel system for leaks, initiate test routine as indicated
2. Check exhaust system for leaks
3. Check HFM for leaks and correct operation
4. Read out oxygen sensor diagnostic data, perform both oxygen sensor test routines as indicated

thanks Mike, planning on checking that out. How bad is it to drive on this?

BzsBimmer · 08-05-2015, 09:34 PM

There was a member who was having O2 issues and they found that the wire was pinched from the factory by the underpanels before the connector piece. Might want to search the forum.

mkPOTO · 08-05-2015, 09:54 PM

Quote:

Originally Posted by BzsBimmer

There was a member who was having O2 issues and they found that the wire was pinched from the factory by the underpanels before the connector piece. Might want to search the forum.

awesome, will check that as well

8k3 · 08-05-2015, 10:58 PM

No support from evolve?

BPMSport · 08-05-2015, 11:09 PM

Quote:

Originally Posted by mkPOTO

Quote:

Originally Posted by Mike Benvo

Fault code 275D - P0172
Fault text Oxygen sensor limit position fault, bank 1
Fault description System Too Rich or Too Lean (Bank 1)

Controller pegged at MAX threshold 1.25
(K_LAM_REG_F_MAX) for time of at least 30 sec.
(K_LAM_DIAG_REG_T)

Controller limit for K_LAM_DIAG_REG_T (60s)

Action in service
1. Check fuel system for leaks, initiate test routine as indicated
2. Check exhaust system for leaks
3. Check HFM for leaks and correct operation
4. Read out oxygen sensor diagnostic data, perform both oxygen sensor test routines as indicated

thanks Mike, planning on checking that out. How bad is it to drive on this?

If you drive lightly you wont hurt anything, but I wouldn't push it in case it's too lean..

If the check engine light becomes fully shaded and you enter an emergency program, then I would absolutely not drove it. Until then, it won't hurt anything - but obviously try to address it as soon as you can.

mkPOTO · 08-06-2015, 08:17 AM

Quote:

Originally Posted by 8k3

No support from evolve?

plenty of support. They have been helping me since day one of the issue. They paid to have a shop look over the car and the car had replaced a few things with no end solution, and with me being annoyed took the car back.

Mike the Engine symbol is not shaded at all. I will be putting in new gaskets and checking all my new 02s this weekend. Hopefully it solves it as I have a track day on monday

Canuckles · 08-06-2015, 09:06 AM

Best wishes, hopefully it is something insignificant. Please keep us updated, good luck OP!

mkPOTO · 08-06-2015, 09:16 AM

Quote:

Originally Posted by Canuckles

Best wishes, hopefully it is something insignificant. Please keep us updated, good luck OP!

thank you and will do

mkPOTO · 08-09-2015, 06:58 PM

Update, well it looks like i had an exhaust leak. I went and replaced both gaskets and still a bit of a leak. Anyone else have this issue? I was told it would take a few miles for them to seal up? Still having the 275d code, but the car seems to run better, but really rich at some points. Working with Evolve to get this resolved.

08-05-2015, 08:26 AM	#1
mkPOTO Mr. Nice Says Hello 718 Rep 16,661 Posts Drives: BMW M3 \| X5 xdrive 35i MSport Join Date: Dec 2008 Location: USA iTrader: (25) Garage List 2002 Lexus GS300 [0.00] 2008 BMW E92 M3 [5.58]	HELP before I blow up my car! Hey guys, need some help with a 275D code (either P0171 or P0172)? Here is the back story. I was having idle issues and some crazy codes, so right away I knew it was the ICV. Replaced that and replaced a fuel sensor as further inspection lead me to find out that it was going out. I also replaced my wideband 02 sensors (front) Even with the 02s replaced the 275D code shows up. So with this driving me nuts. I had put on a stock tune to see if the same issues were coming up and sure enough they do. So the tune is out of the question. I went to a friends shop and he had asked me if I had replaced my battery. So I said why not, replaced it and the car seemed to be happy with it, no 275d codes. So I left the car at the shop for a few days to have some work done. Pick it up last night and BOOM, the 275d code comes back. So here is my question.. I feel like I might have an exhaust leak and have new donut gaskets on the way. Would this cause a code? Also, my confusion is.. when I clear codes and reset adaptation, let the car sit and turn it on the code pops right back up. Leading me to believe it is not that. Someone help me before I blow up my car!!!!!!
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08-05-2015, 01:21 PM	#3
Haywood I know a thing or 2 about a thing or 2... 3299 Rep 3,511 Posts Drives: E36 M3 Coupe, e39 M5, G26 i4 Join Date: Oct 2008 Location: LI, NY iTrader: (11) Garage List 2025 BMW G26 i4 eDr ... [10.00] 2003 BMW e39 M5 [0.00] 1997 BMW e36 M3 [0.00]	Based on your error, it looks like it's Bank 1 which I believe is the passenger side o2 sensor. 275D Oxygen sensor limit position error, bank 1 Mine is Bank 2 which replacing the upstream sensor thought fixed my issue, but did not. __________________ 2025 i4 eDrive40 Tanzanite Blue 2003 Le Mans Blue e39 M5 Dinan S1 1997 Alpine White e36 M3 (the old gal) 2013 Mineral White e92 M3 (sold) 2014 Carbon Black 650i M-sport (sold)
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08-05-2015, 02:41 PM	#4
mkPOTO Mr. Nice Says Hello 718 Rep 16,661 Posts Drives: BMW M3 \| X5 xdrive 35i MSport Join Date: Dec 2008 Location: USA iTrader: (25) Garage List 2002 Lexus GS300 [0.00] 2008 BMW E92 M3 [5.58]	I replaced both, I have this feeling that my gasket might be bad and needs to be replaced. I will be picking them up and installing them on Sunday. If that doesnt work I have no clue what else to try
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08-05-2015, 03:56 PM	#7
mkPOTO Mr. Nice Says Hello 718 Rep 16,661 Posts Drives: BMW M3 \| X5 xdrive 35i MSport Join Date: Dec 2008 Location: USA iTrader: (25) Garage List 2002 Lexus GS300 [0.00] 2008 BMW E92 M3 [5.58]	why did not both? I am going to install the new gasket this weekend. I was told that it could cause codes
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08-05-2015, 06:24 PM	#8
BPMSport BimmerPost Supporting Vendor 3592 Rep 7,300 Posts Drives: 2x Harrop E90 M3, E92 M3, E39 Join Date: Apr 2008 Location: SoCal iTrader: (9) Garage List 2000 BMW M5 [0.00] 1990 BMW 735i Turbo [0.00] 2008 BMW M3 [7.50] 2015 BMW M3 [0.00] 2015 BMW M5 [0.00]	Fault code 275D - P0172 Fault text Oxygen sensor limit position fault, bank 1 Fault description System Too Rich or Too Lean (Bank 1) Controller pegged at MAX threshold 1.25 (K_LAM_REG_F_MAX) for time of at least 30 sec. (K_LAM_DIAG_REG_T) Controller limit for K_LAM_DIAG_REG_T (60s) Action in service 1. Check fuel system for leaks, initiate test routine as indicated 2. Check exhaust system for leaks 3. Check HFM for leaks and correct operation 4. Read out oxygen sensor diagnostic data, perform both oxygen sensor test routines as indicated
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08-05-2015, 09:34 PM	#10
BzsBimmer Major General 3858 Rep 7,115 Posts Drives: '23 G80 FO M3 & '23 G05 X5 M50 Join Date: Mar 2006 Location: Nor. Cal iTrader: (33)	There was a member who was having O2 issues and they found that the wire was pinched from the factory by the underpanels before the connector piece. Might want to search the forum.
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08-05-2015, 10:58 PM	#12
8k3 Banned 147 Rep 951 Posts Drives: Car Join Date: Feb 2013 Location: Boise, ID iTrader: (1)	No support from evolve?
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08-06-2015, 09:06 AM	#15
Canuckles First Lieutenant 119 Rep 331 Posts Drives: MW 2016 F82 M4 Join Date: Feb 2011 Location: British Columbia iTrader: (0)	Best wishes, hopefully it is something insignificant. Please keep us updated, good luck OP!
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08-09-2015, 06:58 PM	#17
mkPOTO Mr. Nice Says Hello 718 Rep 16,661 Posts Drives: BMW M3 \| X5 xdrive 35i MSport Join Date: Dec 2008 Location: USA iTrader: (25) Garage List 2002 Lexus GS300 [0.00] 2008 BMW E92 M3 [5.58]	Update, well it looks like i had an exhaust leak. I went and replaced both gaskets and still a bit of a leak. Anyone else have this issue? I was told it would take a few miles for them to seal up? Still having the 275d code, but the car seems to run better, but really rich at some points. Working with Evolve to get this resolved.
	Appreciate 0 Quote