NEED HELP: 29E0 and 29E1 codes keep coming back

Wookie420 · 12-11-2014, 01:58 PM

Hey guys,

I've got a 2010 E92 335i that I've had some lean fuel condition problems with and my shop and I are at the end of our rope and can't figure this thing out. We've done everything we can think of and the codes keep coming back. Any and all input/ideas/suggestions will be welcomed. Thanks.

Mods on car:
COBB Stage 2+ Aggressive Tune
Stett V2 cold air intake
Stett charge pipe with TiAL BOV (11psi spring)
ETS 5" FMIC
Active Autowerke catless downpipes
Active Autowerke signature catback exhaust

additional suspension and lsd mods shouldn't have any bearing on the issues so I'm not listing them here.

Codes are present regardless of whether or not the tune is installed.

Car has 67K miles on it and so far we've done all of the following:
Walnut blasted intake valves at approx 42K
Spark plugs changed at 50K
Coil packs all replaced around 57K
Main O2 sensors replaced around 60K
Injectors replaced around 64K
HPFP replaced under warranty at 64K
Cracked valve cover replaced at 64K
MAP sensor replaced at 65K
Leaking turbo inlet pipes replaced at 67K
BOV replaced at 67K
Faulty brake booster check valve replaced at 67K
Confirmed vacuum line at removed factory exhaust flap capped
Car has been smoke tested probably about a dozen times now and it appears that there's no leaks.

EDIT: Forgot to mention that prior to the 67K work I was experiencing strong surging at low throttle. That seems to have been remedied.

jyeah · 12-11-2014, 02:32 PM

Quote:

Originally Posted by Wookie420

Hey guys,

I've got a 2010 E92 335i that I've had some lean fuel condition problems with and my shop and I are at the end of our rope and can't figure this thing out. We've done everything we can think of and the codes keep coming back. Any and all input/ideas/suggestions will be welcomed. Thanks.

Mods on car:
COBB Stage 2+ Aggressive Tune
Stett V2 cold air intake
Stett charge pipe with TiAL BOV (11psi spring)
ETS 5" FMIC
Active Autowerke catless downpipes
Active Autowerke signature catback exhaust

additional suspension and lsd mods shouldn't have any bearing on the issues so I'm not listing them here.

Codes are present regardless of whether or not the tune is installed.

Car has 67K miles on it and so far we've done all of the following:
Walnut blasted intake valves at approx 42K
Spark plugs changed at 50K
Coil packs all replaced around 57K
Main O2 sensors replaced around 60K
Injectors replaced around 64K
HPFP replaced under warranty at 64K
Cracked valve cover replaced at 64K
MAP sensor replaced at 65K
Leaking turbo inlet pipes replaced at 67K
BOV replaced at 67K
Faulty brake booster check valve replaced at 67K
Confirmed vacuum line at removed factory exhaust flap capped
Car has been smoke tested probably about a dozen times now and it appears that there's no leaks.

Log your STFT/LTFT/LAMBDA (AFR) on your Cobb. That should tell you if you're running lean. You might need to increase your fuel scalar.

GMWNashville · 12-24-2014, 09:48 AM

Injectors...

Wookie420 · 12-24-2014, 10:09 AM

Quote:

Originally Posted by volkswackin

Injectors...

replaced 4K miles ago....

924er · 12-24-2014, 01:19 PM

Quote:

Originally Posted by jyeah

Quote:

Originally Posted by Wookie420

Hey guys,

I've got a 2010 E92 335i that I've had some lean fuel condition problems with and my shop and I are at the end of our rope and can't figure this thing out. We've done everything we can think of and the codes keep coming back. Any and all input/ideas/suggestions will be welcomed. Thanks.

Mods on car:
COBB Stage 2+ Aggressive Tune
Stett V2 cold air intake
Stett charge pipe with TiAL BOV (11psi spring)
ETS 5" FMIC
Active Autowerke catless downpipes
Active Autowerke signature catback exhaust

additional suspension and lsd mods shouldn't have any bearing on the issues so I'm not listing them here.

Codes are present regardless of whether or not the tune is installed.

Car has 67K miles on it and so far we've done all of the following:
Walnut blasted intake valves at approx 42K
Spark plugs changed at 50K
Coil packs all replaced around 57K
Main O2 sensors replaced around 60K
Injectors replaced around 64K
HPFP replaced under warranty at 64K
Cracked valve cover replaced at 64K
MAP sensor replaced at 65K
Leaking turbo inlet pipes replaced at 67K
BOV replaced at 67K
Faulty brake booster check valve replaced at 67K
Confirmed vacuum line at removed factory exhaust flap capped
Car has been smoke tested probably about a dozen times now and it appears that there's no leaks.

Log your STFT/LTFT/LAMBDA (AFR) on your Cobb. That should tell you if you're running lean. You might need to increase your fuel scalar.

What should normal values be for that?

GMWNashville · 12-24-2014, 03:23 PM

And everything was calibrated correctly?

Wookie420 · 12-24-2014, 04:22 PM

Quote:

Originally Posted by volkswackin

And everything was calibrated correctly?

All work was done at dealership or very good private shop, so yes.

halcyon026 · 12-26-2014, 11:51 AM

I've got those codes when dailing in my tune/fuel & also when I first installed catless DP's. I went back under the car & refitted the DP's, made sure the gaskets were good and that they were tightened down better. Codes went away.

You may want to reset adaptations & get some logs to post.

Wookie420 · 01-03-2015, 12:33 PM

Now have swapped all vacuum lines. Codes persist. Will reset adaptations and see what happens. Anyone have extra MAP sensors lying around?

Scrippy · 01-06-2015, 02:01 AM

Bro have you ever checked your wastegates? Buy a Mittyvac and plug directly into the actuators and pump to 5.7Hg" (200 bar I think). With DP's removed see how wastegate cap is seated. Closed too soon=lean or overboost, closed too late=rich underboost.

Wookie420 · 01-07-2015, 12:45 PM

Quote:

Originally Posted by Scrippy

Bro have you ever checked your wastegates? Buy a Mittyvac and plug directly into the actuators and pump to 5.7Hg" (200 bar I think). With DP's removed see how wastegate cap is seated. Closed too soon=lean or overboost, closed too late=rich underboost.

No I haven't, thanks for the suggestion.

All vacuum lines replaced and so far (~150 miles) the codes have not returned

(knocking on wood)

Scrippy · 01-07-2015, 09:55 PM

Quote:

Originally Posted by Wookie420

Quote:

Originally Posted by Scrippy

Bro have you ever checked your wastegates? Buy a Mittyvac and plug directly into the actuators and pump to 5.7Hg" (200 bar I think). With DP's removed see how wastegate cap is seated. Closed too soon=lean or overboost, closed too late=rich underboost.

No I haven't, thanks for the suggestion.

All vacuum lines replaced and so far (~150 miles) the codes have not returned

(knocking on wood)

Awesome!

Wookie420 · 01-09-2015, 04:17 PM

and they're back

sudo4re · 01-09-2015, 05:03 PM

Do you have access to a smoke machine or can you get somebody to smoke your motor? The smoke will let you know if and where your vacuum leaks are since I believe most lean codes are usually caused by vacuum leaks

Wookie420 · 01-10-2015, 10:52 PM

It's been smoke tested, and we can't find any leaks.
Here's a video of the surging issue:

j1gilles · 01-11-2015, 01:39 PM

Quote:

Originally Posted by Wookie420

It's been smoke tested, and we can't find any leaks.
Here's a video of the surging issue:

Have you tried actually monitoring throttle blade position?

Jeffman · 01-24-2015, 02:15 AM

Quote:

Originally Posted by Wookie420

Hey guys,

I've got a 2010 E92 335i that I've had some lean fuel condition problems with and my shop and I are at the end of our rope and can't figure this thing out. We've done everything we can think of and the codes keep coming back. Any and all input/ideas/suggestions will be welcomed. Thanks.

Mods on car:
COBB Stage 2+ Aggressive Tune
Stett V2 cold air intake
Stett charge pipe with TiAL BOV (11psi spring)
ETS 5" FMIC
Active Autowerke catless downpipes
Active Autowerke signature catback exhaust

additional suspension and lsd mods shouldn't have any bearing on the issues so I'm not listing them here.

Codes are present regardless of whether or not the tune is installed.

Car has 67K miles on it and so far we've done all of the following:
Walnut blasted intake valves at approx 42K
Spark plugs changed at 50K
Coil packs all replaced around 57K
Main O2 sensors replaced around 60K
Injectors replaced around 64K
HPFP replaced under warranty at 64K
Cracked valve cover replaced at 64K
MAP sensor replaced at 65K
Leaking turbo inlet pipes replaced at 67K
BOV replaced at 67K
Faulty brake booster check valve replaced at 67K
Confirmed vacuum line at removed factory exhaust flap capped
Car has been smoke tested probably about a dozen times now and it appears that there's no leaks.

EDIT: Forgot to mention that prior to the 67K work I was experiencing strong surging at low throttle. That seems to have been remedied.

Exactly my problem too. Check out the threads I started about this.

Jeffman · 01-24-2015, 02:18 AM

And it all started after I tried e85...

westchester335i · 01-24-2015, 02:31 AM

I get 29E1 OR 29E0 once in a while when going uphill in and if I mash the pedal in 6th (i know i know) along with 30FF and 2D2E. ONLY when going up very steep hill and mashing pedal in 6th.

If I go up that hill in 4th or 5th mashing pedal no codes.

After restart car runs fine too really weird only happens once or twice every 6 months.

Wookie420 · 01-26-2015, 12:34 PM

Quote:

Originally Posted by Jeffman

And it all started after I tried e85...

I've never run E85.

Seven11 · 01-27-2015, 01:29 AM

still haven't figured it out?

Wookie420 · 01-27-2015, 11:01 AM

Nope. Codes are still present. And so is my low throttle surging. UGH!!!!

12-11-2014, 01:58 PM	#1
Wookie420 Major 47 Rep 1,032 Posts Drives: 2010 335i Coupe/Space Gray Join Date: May 2010 Location: DFW, TX iTrader: (4) Garage List 2010 335i (E92) [10.00]	NEED HELP: 29E0 and 29E1 codes keep coming back Hey guys, I've got a 2010 E92 335i that I've had some lean fuel condition problems with and my shop and I are at the end of our rope and can't figure this thing out. We've done everything we can think of and the codes keep coming back. Any and all input/ideas/suggestions will be welcomed. Thanks. Mods on car: COBB Stage 2+ Aggressive Tune Stett V2 cold air intake Stett charge pipe with TiAL BOV (11psi spring) ETS 5" FMIC Active Autowerke catless downpipes Active Autowerke signature catback exhaust additional suspension and lsd mods shouldn't have any bearing on the issues so I'm not listing them here. Codes are present regardless of whether or not the tune is installed. Car has 67K miles on it and so far we've done all of the following: Walnut blasted intake valves at approx 42K Spark plugs changed at 50K Coil packs all replaced around 57K Main O2 sensors replaced around 60K Injectors replaced around 64K HPFP replaced under warranty at 64K Cracked valve cover replaced at 64K MAP sensor replaced at 65K Leaking turbo inlet pipes replaced at 67K BOV replaced at 67K Faulty brake booster check valve replaced at 67K Confirmed vacuum line at removed factory exhaust flap capped Car has been smoke tested probably about a dozen times now and it appears that there's no leaks. EDIT: Forgot to mention that prior to the 67K work I was experiencing strong surging at low throttle. That seems to have been remedied. __________________ COBB Stage 2+ AGGRESSIVE / STETT Cold-Air Intake / STETT Charge Pipe / TiAL Blow-off Valve / ETS 5" Front-Mount Intercooler / Active Autowerke 3" Catless Downpipes / Active Autowerke Signature Exhaust / AST 4100 Coilovers / OS Giken Superlock LSD / All MOTUL Fluids Last edited by Wookie420; 12-11-2014 at 03:13 PM..
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12-24-2014, 09:48 AM	#3
GMWNashville Colonel 173 Rep 2,373 Posts Drives: 19 G05, 16 F80, 10 E70x5D Join Date: Jan 2008 Location: Nashville, TN iTrader: (2)	Injectors...
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12-24-2014, 03:23 PM	#6
GMWNashville Colonel 173 Rep 2,373 Posts Drives: 19 G05, 16 F80, 10 E70x5D Join Date: Jan 2008 Location: Nashville, TN iTrader: (2)	And everything was calibrated correctly?
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12-26-2014, 11:51 AM	#8
halcyon026 Private First Class 6 Rep 119 Posts Drives: 2011 E70 35i Join Date: Apr 2013 Location: United States iTrader: (0)	I've got those codes when dailing in my tune/fuel & also when I first installed catless DP's. I went back under the car & refitted the DP's, made sure the gaskets were good and that they were tightened down better. Codes went away. You may want to reset adaptations & get some logs to post. __________________ 2011 E70 35i MHD Stage 1+ (current) 2008 E90 335XI FBO, Meth, E85 (sold)
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01-03-2015, 12:33 PM	#9
Wookie420 Major 47 Rep 1,032 Posts Drives: 2010 335i Coupe/Space Gray Join Date: May 2010 Location: DFW, TX iTrader: (4) Garage List 2010 335i (E92) [10.00]	Now have swapped all vacuum lines. Codes persist. Will reset adaptations and see what happens. Anyone have extra MAP sensors lying around? __________________ COBB Stage 2+ AGGRESSIVE / STETT Cold-Air Intake / STETT Charge Pipe / TiAL Blow-off Valve / ETS 5" Front-Mount Intercooler / Active Autowerke 3" Catless Downpipes / Active Autowerke Signature Exhaust / AST 4100 Coilovers / OS Giken Superlock LSD / All MOTUL Fluids
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01-06-2015, 02:01 AM	#10
Scrippy Lord Scrip 1893 Rep 3,077 Posts Drives: 2011 M3 Coupe Join Date: Jan 2012 Location: LA,Ca iTrader: (0) Garage List [10.00] 2007 BMW 335i [10.00]	Bro have you ever checked your wastegates? Buy a Mittyvac and plug directly into the actuators and pump to 5.7Hg" (200 bar I think). With DP's removed see how wastegate cap is seated. Closed too soon=lean or overboost, closed too late=rich underboost. __________________
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01-09-2015, 04:17 PM	#13
Wookie420 Major 47 Rep 1,032 Posts Drives: 2010 335i Coupe/Space Gray Join Date: May 2010 Location: DFW, TX iTrader: (4) Garage List 2010 335i (E92) [10.00]	and they're back __________________ COBB Stage 2+ AGGRESSIVE / STETT Cold-Air Intake / STETT Charge Pipe / TiAL Blow-off Valve / ETS 5" Front-Mount Intercooler / Active Autowerke 3" Catless Downpipes / Active Autowerke Signature Exhaust / AST 4100 Coilovers / OS Giken Superlock LSD / All MOTUL Fluids
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01-09-2015, 05:03 PM	#14
sudo4re Second Lieutenant 46 Rep 236 Posts Drives: 2020 X3M Competition Join Date: Sep 2014 Location: Earth, circa 21st Century iTrader: (9)	Do you have access to a smoke machine or can you get somebody to smoke your motor? The smoke will let you know if and where your vacuum leaks are since I believe most lean codes are usually caused by vacuum leaks __________________ I don't drive fast, I just fly low...
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01-10-2015, 10:52 PM	#15
Wookie420 Major 47 Rep 1,032 Posts Drives: 2010 335i Coupe/Space Gray Join Date: May 2010 Location: DFW, TX iTrader: (4) Garage List 2010 335i (E92) [10.00]	It's been smoke tested, and we can't find any leaks. Here's a video of the surging issue: __________________ COBB Stage 2+ AGGRESSIVE / STETT Cold-Air Intake / STETT Charge Pipe / TiAL Blow-off Valve / ETS 5" Front-Mount Intercooler / Active Autowerke 3" Catless Downpipes / Active Autowerke Signature Exhaust / AST 4100 Coilovers / OS Giken Superlock LSD / All MOTUL Fluids
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01-24-2015, 02:18 AM	#18
Jeffman Lieutenant 32 Rep 492 Posts Drives: 2008 335xi E90 Join Date: Jul 2010 Location: Somewhere in America iTrader: (1) Garage List 2008 335xi Sedan [0.00]	And it all started after I tried e85...
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01-24-2015, 02:31 AM	#19
westchester335i First Lieutenant 34 Rep 356 Posts Drives: Sour Diesel and Haze Join Date: Oct 2013 Location: Westchester iTrader: (2)	I get 29E1 OR 29E0 once in a while when going uphill in and if I mash the pedal in 6th (i know i know) along with 30FF and 2D2E. ONLY when going up very steep hill and mashing pedal in 6th. If I go up that hill in 4th or 5th mashing pedal no codes. After restart car runs fine too really weird only happens once or twice every 6 months.
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01-27-2015, 01:29 AM	#21
Seven11 Private 53 Rep 89 Posts Drives: X4m Join Date: Dec 2014 Location: California iTrader: (2)	still haven't figured it out?
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01-27-2015, 11:01 AM	#22
Wookie420 Major 47 Rep 1,032 Posts Drives: 2010 335i Coupe/Space Gray Join Date: May 2010 Location: DFW, TX iTrader: (4) Garage List 2010 335i (E92) [10.00]	Nope. Codes are still present. And so is my low throttle surging. UGH!!!! __________________ COBB Stage 2+ AGGRESSIVE / STETT Cold-Air Intake / STETT Charge Pipe / TiAL Blow-off Valve / ETS 5" Front-Mount Intercooler / Active Autowerke 3" Catless Downpipes / Active Autowerke Signature Exhaust / AST 4100 Coilovers / OS Giken Superlock LSD / All MOTUL Fluids
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