O2 Sims don't work on my car

JohnL135I · 10-06-2009, 09:45 PM

I have an 09 135i with AR Catless downpipes. I've tried two BMS sims, and have tried the RR sims with and without additional resistors.

The Sims work for around 3 days, then I throw the following code: 2C31.

With the sims removed, I do not throw a 2C31 code, but will throw a 29F4 and 29F5 for no cats. For some reason the Sims cause this 2C31 code. I know of another owner having the same exact issue.

Any ideas or a recommended combination of resistors I should try (Shiv...help

).

Thanks

midlife · 10-06-2009, 09:57 PM

Quote:

Originally Posted by JohnL135I

I have an 09 135i with AR Catless downpipes. I've tried two BMS sims, and have tried the RR sims with and without additional resistors.

The Sims work for around 3 days, then I throw the following code: 2C31.

With the sims removed, I do not throw a 2C31 code, but will throw a 29F4 and 29F5 for no cats. For some reason the Sims cause this 2C31 code. I know of another owner having the same exact issue.

Any ideas or a recommended combination of resistors I should try (Shiv...help

).

Thanks

you had 2 bms simms and now asking for shiv´s help... which tune do you have if any ??

mkPOTO · 10-06-2009, 09:58 PM

yeah ive been hearing about them not working after a few days, is there any other options?

midlife · 10-06-2009, 10:05 PM

i have an 08 and never haad any sims problems with my non cat dps...
actually it is kind of rare to hear about sims not working.

if the OP has an 09 car, i know some of the tunes may not run perfectly on the newer 335s but that is being fixd right now.

maybe the few sims problems reported (like you guys) are for 09 and 09.5 (the newest) 335s ??

JohnL135I · 10-06-2009, 10:07 PM

Quote:

Originally Posted by midlife

you had 2 bms simms and now asking for shiv´s help... which tune do you have if any ??

I have a JB3. However, Shiv wrote the DIY O2 Sim so I was hoping for some recommendations. I built the O2 Sim and have the same issues running it along with a BMS sim, and RR sim, all result in this code returning in around 3 days.

Mike@N54Tuning.com · 10-06-2009, 10:10 PM

Shouldn't make a difference but did you wire the sims in the stock harness or the JB3 harness?

Mike

JohnL135I · 10-06-2009, 10:12 PM

Quote:

Originally Posted by Mike@N54Tuning.com

Shouldn't make a difference but did you wire the sims in the stock harness or the JB3 harness?

Mike

JB3 harness.

Mike@N54Tuning.com · 10-06-2009, 11:06 PM

Quote:

Originally Posted by JohnL135I

JB3 harness.

Maybe it's a sign you should reinstall your cats and stop polluting the environment...

Mike

Parachute>Seatbelts · 10-06-2009, 11:10 PM

You have o2 sensors in?

skitlz · 10-07-2009, 12:54 PM

you sure you put them in the right pins.. cause the male and female end on the jb3 harness have different numbers. i always forget which side your supposed to correlate the numbers to

TMR · 10-07-2009, 01:55 PM

I know with the REV 2 you wouldn't have that problem.

jaza45 · 10-07-2009, 02:01 PM

its probably not your sims but the O2 themselves are bad...thats why it keeps throwing a code..

Kevin@AKMotorwerk · 10-07-2009, 02:02 PM

Quote:

Originally Posted by skitlz

you sure you put them in the right pins.. cause the male and female end on the jb3 harness have different numbers. i always forget which side your supposed to correlate the numbers to

Kevin@AKMotorwerk · 10-07-2009, 02:02 PM

Quote:

Originally Posted by ******

its probably not your sims but the O2 themselves are bad...thats why it keeps throwing a code..

you sure you put gray 02 wire sensors to the back and black to the front?

thwgw24 · 10-07-2009, 02:51 PM

Quote:

Originally Posted by TMR

I know with the REV 2 you wouldn't have that problem.

Not exactly true.
We have seen at least 4 to 5 people reported getting codes with O2 sim set to 80% as instructed. And I'm one of them.
Still trying to lower the % and see which number will not throw codes.
Just updated to a new beta map last night and 80% is still working fine at this moment.

OpenFlash · 10-07-2009, 03:15 PM

Quote:

Originally Posted by thwgw24

Not exactly true.
We have seen at least 4 to 5 people reported getting codes with O2 sim set to 80% as instructed. And I'm one of them.
Still trying to lower the % and see which number will not throw codes.
Just updated to a new beta map last night and 80% is still working fine at this moment.

I made a little o2 sim tweak with last night's beta maps. Very small but might do the trick. Leave it at 80% unless a code pops up. If it does, then start lowering the value in small increments as suggested earlier.

Shiv

SD135i · 10-07-2009, 03:57 PM

Quote:

Originally Posted by TMR

I know with the REV 2 you wouldn't have that problem.

This is the dumbest thing I have ever read. You don't even know what the issue is.

If you were talking about the pins you ought to be clear so you don't look like an idiot.

This is why I don't come to these forums, its full of dildos that get off fighting over their tunes.

Op: Have you contacted Terry? I had issues with my O2 sims originally as well due to my own error. Terry walked me through the setup and I caught my error. It may not be the sims at all but maybe something wrong with the dP install? Just thinking outloud.

Good luck man.

ianthegreat · 10-07-2009, 04:33 PM

Quote:

Originally Posted by Mike@N54Tuning.com

Maybe it's a sign you should reinstall your cats and stop polluting the environment...

Mike

Shut up hippie, maybe you should stop contributing

cocoturkey · 10-07-2009, 05:06 PM

Quote:

Originally Posted by shiv@vishnu

I made a little o2 sim tweak with last night's beta maps. Very small but might do the trick. Leave it at 80% unless a code pops up. If it does, then start lowering the value in small increments as suggested earlier.

Shiv

could you please send me the beta map? I'm keeping getting the same codes even if I dropped the % from 80 to 70 by 1% decreasement. I have been getting the same codes since I updated with the lastest DME version and the lastest map (9-9)... i'm not sure what cause this problem. Procede V3 RevII used to work PERFECTLY for me!! I love my v3 so much~

MFKN3 · 10-07-2009, 05:11 PM

This is O/T but far more damage is done to the environment through mining the platinum, nickel and rhodium that goes in the cats than running a car without the cats in the first place.

So removing your cats is protesting in favour of the environment... Damn hippies

Mr. 5 · 10-07-2009, 05:41 PM

This might be a silly question, but are you sure you are tapping into the correct wires?

thwgw24 · 10-07-2009, 05:57 PM

Quote:

Originally Posted by cocoturkey

could you please send me the beta map? I'm keeping getting the same codes even if I dropped the % from 80 to 70 by 1% decreasement. I have been getting the same codes since I updated with the lastest DME version and the lastest map (9-9)... i'm not sure what cause this problem. Procede V3 RevII used to work PERFECTLY for me!! I love my v3 so much~

Shiv,

seems like more and more people are having the same issue here.
Do you think it's because of the new DME software?? I'm running 34.x.x
cocoturkey, is that what you're running as well??

10-06-2009, 09:45 PM	#1
JohnL135I Donkey Kong King 89 Rep 1,129 Posts Drives: 2012 Boss 302 Join Date: Dec 2007 Location: Sahuarita, AZ iTrader: (3)	O2 Sims don't work on my car I have an 09 135i with AR Catless downpipes. I've tried two BMS sims, and have tried the RR sims with and without additional resistors. The Sims work for around 3 days, then I throw the following code: 2C31. With the sims removed, I do not throw a 2C31 code, but will throw a 29F4 and 29F5 for no cats. For some reason the Sims cause this 2C31 code. I know of another owner having the same exact issue. Any ideas or a recommended combination of resistors I should try (Shiv...help). Thanks __________________ [SIGPIC][/SIGPIC]
	Appreciate 0 Tweet Quote

10-06-2009, 09:58 PM	#3
mkPOTO Mr. Nice Says Hello 636 Rep 16,662 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]	yeah ive been hearing about them not working after a few days, is there any other options?
	Appreciate 0 Quote

10-06-2009, 10:05 PM	#4
midlife ocasionally in crisis 52 Rep 2,358 Posts Drives: '08 335i cabrio Join Date: Jun 2007 Location: .......... iTrader: (0)	i have an 08 and never haad any sims problems with my non cat dps... actually it is kind of rare to hear about sims not working. if the OP has an 09 car, i know some of the tunes may not run perfectly on the newer 335s but that is being fixd right now. maybe the few sims problems reported (like you guys) are for 09 and 09.5 (the newest) 335s ?? __________________ If your car isn't scary - it's just not fast enough ! RPI IC / UR catless DPs / JB3 2.0 beta / UR CAI / Quaife LSD / Snow Methanol Injection / VK oil cooler upgrade / Forge DVs / M3 rear sway / Riss catch can / Paddle shifting 6AT / M Sport steering wheel / Logic 7 / Dunlop Direzza Z1 255/235 /
	Appreciate 0 Quote

10-06-2009, 10:10 PM	#6
Mike@N54Tuning.com Joint Chiefs of Staff 4918 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	Shouldn't make a difference but did you wire the sims in the stock harness or the JB3 harness? Mike
	Appreciate 0 Quote

10-06-2009, 11:10 PM	#9
Parachute>Seatbelts Private First Class 24 Rep 142 Posts Drives: in the rain...cuz its Portland Join Date: Apr 2009 Location: PDX iTrader: (0)	You have o2 sensors in?
	Appreciate 0 Quote

10-07-2009, 12:54 PM	#10
skitlz Private First Class 7 Rep 183 Posts Drives: e92 335i Join Date: Sep 2008 Location: Sac iTrader: (0)	you sure you put them in the right pins.. cause the male and female end on the jb3 harness have different numbers. i always forget which side your supposed to correlate the numbers to
	Appreciate 0 Quote

10-07-2009, 01:55 PM	#11
TMR Brigadier General 394 Rep 3,161 Posts Drives: M3 Join Date: Jun 2008 Location: Torrance iTrader: (12)	I know with the REV 2 you wouldn't have that problem.
	Appreciate 0 Quote

10-07-2009, 02:01 PM	#12
jaza45 Banned 61 Rep 1,121 Posts Drives: 2008 LSB E90 335I Join Date: Nov 2008 Location: MIAMI iTrader: (14)	its probably not your sims but the O2 themselves are bad...thats why it keeps throwing a code..
	Appreciate 0 Quote

10-07-2009, 05:11 PM	#20
MFKN3 Colonel 127 Rep 2,224 Posts Drives: supercharged 4.4L stroker E92 Join Date: Nov 2008 Location: Australia iTrader: (2)	This is O/T but far more damage is done to the environment through mining the platinum, nickel and rhodium that goes in the cats than running a car without the cats in the first place. So removing your cats is protesting in favour of the environment... Damn hippies
	Appreciate 0 Quote

10-07-2009, 05:41 PM	#21
Mr. 5 Modder Raider 753 Rep 8,633 Posts Drives: M3 Join Date: Apr 2007 Location: Surf City, HB iTrader: (31) Garage List 2007 e90 335i [8.00]	This might be a silly question, but are you sure you are tapping into the correct wires? __________________ e36 M3 Coupe, e36 325i Sedan e90 335i--SOLD Best 60-130-------------9.15 Seconds------------------WWW.MR5RACING.COM
	Appreciate 0 Quote