Bank 1 O2 sensor code won't go away.

BSM n54iS · 01-31-2017, 01:52 PM

Well this may be a silly suggestion too, but did you try resetting adaptations OP?

Corno_Baldwin · 01-31-2017, 02:12 PM

That 2c3f it seems deals specifically to the DME - internal error. Wish I could offer more help.

BashShah · 01-31-2017, 04:16 PM

Quote:

Originally Posted by Black n54is

Well this may be a silly suggestion too, but did you try resetting adaptations OP?

Yup.

BashShah · 01-31-2017, 04:19 PM

Quote:

Originally Posted by Corno_Baldwin

That 2c3f it seems deals specifically to the DME - internal error. Wish I could offer more help.

This is what I fear, that my fuses are ok, sensors replaced, and now o2 Bank 1 is not active.
first I need to get bmw software installed asap.
and test continuity from os sensor plug to dme today.

I am soooo hoping to find a shorted wire rather than a short in the dme.

BashShah · 02-02-2017, 04:33 PM

Did wiring testing for Continuity.
Looked good, but a few wires were multiple contacts.

Took car to dealer.
Going to post report.

They said it is DME.
Shit

BSM n54iS · 02-02-2017, 04:48 PM

Quote:

Originally Posted by DarkNemesis

Did wiring testing for Continuity.
Looked good, but a few wires were multiple contacts.

Took car to dealer.
Going to post report.

They said it is DME.
Shit

More knowledgeable guys than me on this, but there are resistors or something that you can solder in yourself to the DME that may fix this issue. I would not pay the dealer to fix DME unless it was absolutely the last fucking thing possible on this planet to do

Edit: Mosfets is what I meant, not resistors

hassmaschine · 02-02-2017, 04:56 PM

It's all SMD - most people don't have the tools or skills required to repair it. Including the dealership techs.

DJtoad · 02-02-2017, 05:21 PM

A shorted O2 sensor can indeed fry DME components but my guess is that the damaged components are fairly easy to replace. Before having someone replace and code the entire DME, I'd remove the DME from the car and have a competent electronics repair company take a look and replace suspect components. There appears to be a very well regarded one in Vancouver called Excel Electronics with forty 5-star reviews on Google. Probably other good companies in the area as well.

Corno_Baldwin · 02-02-2017, 07:39 PM

This^^^^

Definitely worth a check to see how much it is and see what they can do!

BashShah · 02-03-2017, 02:44 AM

Quote:

Originally Posted by Black n54is

More knowledgeable guys than me on this, but there are resistors or something that you can solder in yourself to the DME that may fix this issue. I would not pay the dealer to fix DME unless it was absolutely the last fucking thing possible on this planet to do

1+ on this Brother.
Getting a call from Dealer tomorrow to let me know which resister on PIN 10.
I need to know which is PIN 10 on DME Harness.

BashShah · 02-03-2017, 02:50 AM

Quote:

Originally Posted by DJtoad

A shorted O2 sensor can indeed fry DME components but my guess is that the damaged components are fairly easy to replace. Before having someone replace and code the entire DME, I'd remove the DME from the car and have a competent electronics repair company take a look and replace suspect components. There appears to be a very well regarded one in Vancouver called Excel Electronics with forty 5-star reviews on Google. Probably other good companies in the area as well.

I know a LOCAL guy, but this is what I will try first.
Even cloning a use MSD1 DME is
150 CAD +12% Tax.
+
599 for cloning service that is USD.....so like 900 CAD.
So I am at just over 1000 wth my own labour.

Seriously.......if there is a chance I can get it repaired locally for a soldering job.
Will do this for sure.....but gotta find a good local store first.

Thanks Guys.

hassmaschine · 02-03-2017, 10:01 AM

This is the N52 pinout but the N54 O2 sensors use the same pins. X60002 pins 5-13 are for pre-cat O2 sensors.

BSM n54iS · 02-03-2017, 02:48 PM

Mosfets OP! Look up and into replacing the Mosfets, that's what I meant to say in my last post..not resistors. Also just in case:

http://www.e90post.com/forums/showthread.php?t=1227285

DJtoad · 02-03-2017, 03:54 PM

Quote:

Originally Posted by Black n54is

Mosfets OP! Look up and into replacing the Mosfets, that's what I meant to say in my last post..not resistors. Also just in case:

http://www.e90post.com/forums/showthread.php?t=1227285

I believe you're thinking of the injector MOSFET failures and those codes are 30BA or 30BB. I think the OP's code is referring to a different area of the DME but regardless, a good electronics shop should be able to determine which, in any, components are bad.

GogglesPisano · 02-03-2017, 08:07 PM

I replaced a fried $1 SMD driver chip in the JBE and saved $400 + coding for a new one.

The PCB had a conformal coating that added a bit of work to get the old part removed, but it wasn't too bad if you know how to solder and use a very fine soldering iron and a magnifier.

BashShah · 02-05-2017, 03:00 AM

Quote:

Originally Posted by hassmaschine

This is the N52 pinout but the N54 O2 sensors use the same pins. X60002 pins 5-13 are for pre-cat O2 sensors.

Thanks Man.....gave me a starting point.

BashShah · 02-05-2017, 03:01 AM

Quote:

Originally Posted by Black n54is

Mosfets OP! Look up and into replacing the Mosfets, that's what I meant to say in my last post..not resistors. Also just in case:

http://www.e90post.com/forums/showthread.php?t=1227285

I have a MSD81 he is selling MSD80
But Thank You.

BashShah · 02-05-2017, 03:02 AM

Quote:

Originally Posted by GogglesPisano

I replaced a fried $1 SMD driver chip in the JBE and saved $400 + coding for a new one.

The PCB had a conformal coating that added a bit of work to get the old part removed, but it wasn't too bad if you know how to solder and use a very fine soldering iron and a magnifier.

That is what I am going to try at a local shop first.
Lets see.
keep you posted.

BashShah · 02-24-2017, 04:10 AM

No Luck with any Local Shop even the one Dealer recommended.
So I found an Awesome guy that got me a MSD81 and coded it to my Car and now my error is gone and holy smokes......car is running Extremely Smooth.

My Original DME was MSD80, and now I have a MSD81.
Damn what a difference in smoothness in my car.

So there you have it.
Thanks for all who responded.....

E92cpe · 05-07-2017, 05:10 PM

Quote:

Originally Posted by DarkNemesis

No Luck with any Local Shop even the one Dealer recommended.
So I found an Awesome guy that got me a MSD81 and coded it to my Car and now my error is gone and holy smokes......car is running Extremely Smooth.

My Original DME was MSD80, and now I have a MSD81.
Damn what a difference in smoothness in my car.

So there you have it.
Thanks for all who responded.....

I'm having this same issue right now. I think I have a 2010 though. I replaced the bank 1 02 sensor and no change and I'm still throwing that code 2C31. So how much is this MSD81? Amd what is it? Thank you for your help this issue is draning me. Lol

BashShah · 05-10-2017, 06:58 PM

Quote:

Originally Posted by E92cpe

I'm having this same issue right now. I think I have a 2010 though. I replaced the bank 1 02 sensor and no change and I'm still throwing that code 2C31. So how much is this MSD81? Amd what is it? Thank you for your help this issue is draning me. Lol

Published on Oct 12, 2016
BMW DME reprogramming.
A secondhand DME (MSD81) bought from eBay was to used to replace the original DME (MSD80).
BMW 335i E90
Contact: +1.985.492.0666 call/text or email GcodingBMW AT Gmail.COM

Tell him I sent you.

Boland01 · 05-11-2017, 06:49 AM

The MDS80 also went on our 3/07 build 335i. Previously, a year prior had the mosfets replaced. Then a month ago starting getting misfires and O2 errors. My indy gave up on it. Based on the codes it was the DME.

In the end we got a new MDS81 DME installed and coded. The car has never run better.

01-31-2017, 01:52 PM	#23
BSM n54iS Brigadier General 2685 Rep 4,202 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	Well this may be a silly suggestion too, but did you try resetting adaptations OP? __________________ '11 335is BSM MT "BMW Performance Editon" \| '16 Porsche Macan Turbo GruppeM CF Intake \| AR Resonated DP \| ER CP \| Turbosmart RacePort BOV \| Cobb FMIC \| RB Inlets \| RB External Mishi/Turner OCC \| Michelin PS4 \| BMW Performance Springs/Bilstein B8 + Dinan & M3 bits \| BMW Brembo BBK \| BMW Performance CF Spoiler \| BMW Performance CF Lip \| BMW Performance Alcantara \| PS Designs GTS Armrest \| AG H6-40 \| Rear Seat Delete
	Appreciate 0 Quote

01-31-2017, 02:12 PM	#24
Corno_Baldwin Private First Class 28 Rep 110 Posts Drives: 2007 335i e93 6MT Join Date: Nov 2016 Location: Seattle iTrader: (0)	That 2c3f it seems deals specifically to the DME - internal error. Wish I could offer more help.
	Appreciate 0 Quote

02-02-2017, 04:33 PM	#27
BashShah Colonel 296 Rep 2,015 Posts Drives: 2012 335i Sedan Join Date: Oct 2012 Location: Vancouver, Canada iTrader: (0)	Did wiring testing for Continuity. Looked good, but a few wires were multiple contacts. Took car to dealer. Going to post report. They said it is DME. Shit
	Appreciate 0 Quote

02-02-2017, 04:56 PM	#29
hassmaschine Major General 3966 Rep 7,215 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	It's all SMD - most people don't have the tools or skills required to repair it. Including the dealership techs.
	Appreciate 0 Quote

02-02-2017, 05:21 PM	#30
DJtoad Captain 58 Rep 665 Posts Drives: 2010 535i M Sport Join Date: May 2008 Location: Ellicott City, MD iTrader: (2)	A shorted O2 sensor can indeed fry DME components but my guess is that the damaged components are fairly easy to replace. Before having someone replace and code the entire DME, I'd remove the DME from the car and have a competent electronics repair company take a look and replace suspect components. There appears to be a very well regarded one in Vancouver called Excel Electronics with forty 5-star reviews on Google. Probably other good companies in the area as well. __________________ 2010 535i M Sport - Platinum Gray/Dakota Black/Anthracite Bamboo 2016 Jaguar F-Type S AWD - Polar White/Cirrus
	Appreciate 1 Corno_Baldwin27.50 Quote

02-02-2017, 07:39 PM	#31
Corno_Baldwin Private First Class 28 Rep 110 Posts Drives: 2007 335i e93 6MT Join Date: Nov 2016 Location: Seattle iTrader: (0)	This^^^^ Definitely worth a check to see how much it is and see what they can do!
	Appreciate 0 Quote

02-03-2017, 02:48 PM	#35
BSM n54iS Brigadier General 2685 Rep 4,202 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	Mosfets OP! Look up and into replacing the Mosfets, that's what I meant to say in my last post..not resistors. Also just in case: http://www.e90post.com/forums/showthread.php?t=1227285 __________________ '11 335is BSM MT "BMW Performance Editon" \| '16 Porsche Macan Turbo GruppeM CF Intake \| AR Resonated DP \| ER CP \| Turbosmart RacePort BOV \| Cobb FMIC \| RB Inlets \| RB External Mishi/Turner OCC \| Michelin PS4 \| BMW Performance Springs/Bilstein B8 + Dinan & M3 bits \| BMW Brembo BBK \| BMW Performance CF Spoiler \| BMW Performance CF Lip \| BMW Performance Alcantara \| PS Designs GTS Armrest \| AG H6-40 \| Rear Seat Delete
	Appreciate 0 Quote

02-03-2017, 08:07 PM	#37
GogglesPisano Private 24 Rep 53 Posts Drives: 2006 325xi Join Date: Jan 2015 Location: United States iTrader: (0)	I replaced a fried $1 SMD driver chip in the JBE and saved $400 + coding for a new one. The PCB had a conformal coating that added a bit of work to get the old part removed, but it wasn't too bad if you know how to solder and use a very fine soldering iron and a magnifier.
	Appreciate 0 Quote

02-24-2017, 04:10 AM	#41
BashShah Colonel 296 Rep 2,015 Posts Drives: 2012 335i Sedan Join Date: Oct 2012 Location: Vancouver, Canada iTrader: (0)	No Luck with any Local Shop even the one Dealer recommended. So I found an Awesome guy that got me a MSD81 and coded it to my Car and now my error is gone and holy smokes......car is running Extremely Smooth. My Original DME was MSD80, and now I have a MSD81. Damn what a difference in smoothness in my car. So there you have it. Thanks for all who responded.....
	Appreciate 0 Quote

05-11-2017, 06:49 AM	#44
Boland01 Lieutenant 149 Rep 460 Posts Drives: 2010 535ix, 2008, 2007 335i Join Date: Sep 2013 Location: Magnolia, TX iTrader: (0)	The MDS80 also went on our 3/07 build 335i. Previously, a year prior had the mosfets replaced. Then a month ago starting getting misfires and O2 errors. My indy gave up on it. Based on the codes it was the DME. In the end we got a new MDS81 DME installed and coded. The car has never run better.
	Appreciate 0 Quote