Throwing codes

mwahlert · 03-21-2014, 10:48 AM

2008 335i
113k miles

OFT Stage 1 Tune.

Car was displaying some part throttle roughness, but under WOT was running rather well.

Now, out of the blue car has nothing left to give... slower than stock - as if no boost. But, no CEL.

Car does store multiple instances of 2AAF (QTY 5 in past week) and 29E0 (QTY 2 in past week).

I'm not sure where to turn....

Sean335i · 03-21-2014, 07:58 PM

you did google the codes right? use Cobb to pull the codes and clear if need be.

when did the car last have plugs and coils swapped?

ErzenE92 · 03-21-2014, 08:08 PM

I would suggest replacing coils and plugs.

mwahlert · 03-21-2014, 09:50 PM

Quote:

Originally Posted by Sean335i

you did google the codes right? use Cobb to pull the codes and clear if need be.

when did the car last have plugs and coils swapped?

yes, i have searched.... would not be asking for input if i had found definitive answers.

P0171 - System Too Lean (Bank 1)
P29E0 - something about mixture control.

what makes you suggest plugs and coils?

ErzenE92 · 03-22-2014, 12:36 PM

Quote:

Originally Posted by mwahlert

yes, i have searched.... would not be asking for input if i had found definitive answers.

P0171 - System Too Lean (Bank 1)
P29E0 - something about mixture control.

what makes you suggest plugs and coils?

I ran into those codes as well so I started by changing the coils and plugs.

Ingeniator · 03-22-2014, 12:44 PM

If you have cobb. reset the pids to default and grab a log and put on datazap.me. It is most likely fuel related. it could be either the lp fuel system or like you asked something in the high pressure loop. Grab a log after clearing the codes and we can take a look.

mwahlert · 03-27-2014, 07:12 PM

Quote:

Originally Posted by Ingeniator

If you have cobb. reset the pids to default and grab a log and put on datazap.me. It is most likely fuel related. it could be either the lp fuel system or like you asked something in the high pressure loop. Grab a log after clearing the codes and we can take a look.

http://datazap.me/u/mwahlert/log1

mwahlert · 03-28-2014, 10:39 AM

Threw these again:

P2AAF
P2A2D
P29E0

Will gather another log with more fuel parameters. The log above was with default parameters and I don't think will tell much of a story.

DE92an · 03-28-2014, 08:50 PM

I had the same issues before winter, cylinder 2 misfire on cold start replaced all 6 plugs and 2 coils. Have been fine ever since.

mwahlert · 05-27-2014, 11:05 AM

Back on stock tune (AP uninstalled), and now throwing these codes:

Codes pulled with Mini AP temporarily

P0171
P0174

P29E0
P29E1

P2AAF
P2A2D

P2F9E (I believe this was stored when my oil level dropped below acceptable levels).

I think based on the combination of 2AAF and 2A2D either my LPFP or LPF sensor have had enough... The LPF sensor was replaced a few years ago by the previous owner, though.

kevinbahnz · 08-31-2014, 04:25 PM

Did you ever get that solved?

DetectiveLoki · 09-07-2014, 04:37 AM

Quote:

Originally Posted by mwahlert

Back on stock tune (AP uninstalled), and now throwing these codes:

Codes pulled with Mini AP temporarily

P0171
P0174

P29E0
P29E1

P2AAF
P2A2D

P2F9E (I believe this was stored when my oil level dropped below acceptable levels).

I think based on the combination of 2AAF and 2A2D either my LPFP or LPF sensor have had enough... The LPF sensor was replaced a few years ago by the previous owner, though.

Were you able to resolve this? I recently got P0171 and P0171P. I only get these codes if I were to turn on my car and drive right away. If I let it warm up then it works just fine. My car drives fine with this code too. Weird...

mwahlert · 09-07-2014, 03:08 PM

I installed new VANOS solenoids last week and the car has been fine since. Only time will tell, but so far it remediated all of the issues I was having.

mwahlert · 11-07-2014, 09:56 PM

Quote:

Originally Posted by mwahlert

I installed new VANOS solenoids last week and the car has been fine since. Only time will tell, but so far it remediated all of the issues I was having.

Thought the VANOS solenoids fixed my problems. I was wrong.

Car continues to generate multiple 2AAF and 29E0 codes. Had been running relatively well. Started getting some part throttle roughness, and now all of a sudden car has nothing to give. Feels slower than stock. LTFT are often in mid 20%s.

I'm at a loss - not really sure where I should start throwing money... Low pressure pump? Take it to BMW in hopes it is the HPFP and if not get stuck eating $135hr diagnostic?

Ugh...

LPFP looks OK with INPA. Hovers around 5000 at idle.

03-21-2014, 10:48 AM	#1
mwahlert Lieutenant Colonel 97 Rep 1,659 Posts Drives: 2009 335i Join Date: Apr 2008 Location: NC iTrader: (8)	Throwing codes - could use some advice 2008 335i 113k miles OFT Stage 1 Tune. Car was displaying some part throttle roughness, but under WOT was running rather well. Now, out of the blue car has nothing left to give... slower than stock - as if no boost. But, no CEL. Car does store multiple instances of 2AAF (QTY 5 in past week) and 29E0 (QTY 2 in past week). I'm not sure where to turn.... Last edited by mwahlert; 11-07-2014 at 09:57 PM..
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03-21-2014, 07:58 PM	#2
Sean335i New Enthusiast & Photographer 8 Rep 105 Posts Drives: 2009 E90 335i Join Date: Feb 2013 Location: Phoenix, AZ iTrader: (0) Garage List 2009 E90 335i [0.00]	you did google the codes right? use Cobb to pull the codes and clear if need be. when did the car last have plugs and coils swapped? __________________ Sean My Flickr Car Gallery Cobb AP Stage 2+ FMIC Sport / BMS DCI / VRSF 7" FMIC / VRSF 3" DP / RPI Scoops / Alpina B3 Trans Flash
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03-21-2014, 08:08 PM	#3
ErzenE92 First Lieutenant 12 Rep 348 Posts Drives: 2009 E92 335i Join Date: Jun 2013 Location: Brentwood CA iTrader: (2) Garage List 2009 BMW 335i coupe [0.00]	I would suggest replacing coils and plugs.
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03-22-2014, 12:44 PM	#6
Ingeniator Major 34 Rep 1,093 Posts Drives: 07 335XI(90) 09 135I(82) Join Date: Nov 2013 Location: Fort Mac, Alberta iTrader: (1)	If you have cobb. reset the pids to default and grab a log and put on datazap.me. It is most likely fuel related. it could be either the lp fuel system or like you asked something in the high pressure loop. Grab a log after clearing the codes and we can take a look. __________________ 07 335XI (A008006) 6AT ~94K miles JB4 G5 ISO VSRF DP's 09 135I M (VK80379) 6MT. Race Project car. 1) Install Cobb/piggyback? and Motiv 600 Kit[HTA3076R w/ tial .82] 2) JRZ or Moton suspension. 3) Build high flow intake manifold with multi-port fuel and relocate OFH 4) Build full cage 5) Complete staged twin setup with HTA4205R [w/Tial 1.16] 6) Complete dry sump system
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03-28-2014, 10:39 AM	#8
mwahlert Lieutenant Colonel 97 Rep 1,659 Posts Drives: 2009 335i Join Date: Apr 2008 Location: NC iTrader: (8)	Threw these again: P2AAF P2A2D P29E0 Will gather another log with more fuel parameters. The log above was with default parameters and I don't think will tell much of a story.
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03-28-2014, 08:50 PM	#9
DE92an Private First Class 26 Rep 196 Posts Drives: 2009 335xi coupe Join Date: Aug 2013 Location: . iTrader: (0) Garage List 2009 BMW 335i X-drive [9.50]	I had the same issues before winter, cylinder 2 misfire on cold start replaced all 6 plugs and 2 coils. Have been fine ever since. __________________ Motiv tuned l VRSF DP l VRSF 7" IC l ER CP l hexon rr600 l mmp inlets/outlets l KW V1 l Fuel-It! Stage 2 l bmw performance exhaust l
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05-27-2014, 11:05 AM	#10
mwahlert Lieutenant Colonel 97 Rep 1,659 Posts Drives: 2009 335i Join Date: Apr 2008 Location: NC iTrader: (8)	Back on stock tune (AP uninstalled), and now throwing these codes: Codes pulled with Mini AP temporarily P0171 P0174 P29E0 P29E1 P2AAF P2A2D P2F9E (I believe this was stored when my oil level dropped below acceptable levels). I think based on the combination of 2AAF and 2A2D either my LPFP or LPF sensor have had enough... The LPF sensor was replaced a few years ago by the previous owner, though. Last edited by mwahlert; 05-27-2014 at 12:57 PM..
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08-31-2014, 04:25 PM	#11
kevinbahnz Captain 159 Rep 709 Posts Drives: 2008 335xi sedan Join Date: Aug 2008 Location: Ma-NC iTrader: (1)	Did you ever get that solved? __________________
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09-07-2014, 03:08 PM	#13
mwahlert Lieutenant Colonel 97 Rep 1,659 Posts Drives: 2009 335i Join Date: Apr 2008 Location: NC iTrader: (8)	I installed new VANOS solenoids last week and the car has been fine since. Only time will tell, but so far it remediated all of the issues I was having.
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