Code P2AAF should I be concerned?

CT335xi · 04-05-2012, 09:12 PM

Ok before you guys give me a a hard time and tell me to search, I did . I did find that thread that Mr . 5 has posted with the codes, I don't know if I'm reading it right but, I did find something that read like this- 2AAF Fuel pump plausibility fix - very common code stock + modified alike, does not trigger a cel just ignore it. Well I was driving today and the car is running strong. I run stage 1 agg. v4.00 and have never had codes, well today I got code P2AAF. Just wanted to know if I should worry? The car has no cel and it starts good no long cranks, as I have heard is a sympton of the fuel pump going. Any ideas?

skim7x · 04-05-2012, 09:20 PM

Quote:

Originally Posted by CT335xi

very common code stock + modified alike, does not trigger a cel just ignore it.

good searching =P

CT335xi · 04-05-2012, 09:42 PM

Quote:

Originally Posted by skim7x

good searching =P

I don't want to sound stupid but what do you mean? Is what I found correct?

skim7x · 04-05-2012, 09:49 PM

you don't sound stupid. you found your answer. likely low pressure fuel pump... i had that with one of the v300 maps. load the v401 map

CT335xi · 04-05-2012, 10:05 PM

Quote:

Originally Posted by skim7x

you don't sound stupid. you found your answer. likely low pressure fuel pump... i had that with one of the v300 maps. load the v401 map

Thanks skim7x . How different is the v400 from v401?

Thanks John

skim7x · 04-05-2012, 10:40 PM

Quote:

Originally Posted by CT335xi

Thanks skim7x . How different is the v400 from v401?

Thanks John

The new v4.01 maps correct the DME logic that was causing DTC P2D59 codes as well as addresses the under-boost issue some vehicles were experiencing.

But you may still have more success with the 2AAF code.

Jklad · 03-15-2013, 10:32 AM

Hi, does anyone no anything abou when the p2aaf is combined with misfires on all cylinders, e.g. p29cf,p29cd,p29ce,p29cc?

Thanks

skim7x · 03-15-2013, 10:35 AM

Quote:

Originally Posted by Jklad

Hi, does anyone no anything abou when the p2aaf is combined with misfires on all cylinders, e.g. p29cf,p29cd,p29ce,p29cc?

Thanks

It's really a BS code... just fix the misfire.

Jklad · 03-15-2013, 11:48 AM

Thanks Skim - I spoke with Cobb, and they verified that it's usually not a code to worry about. I'll try replacing the spark plugs and coil packs for the 3 misfiring cylinders and go from there.

skim7x · 03-15-2013, 12:17 PM

Sounds good! The coil packs on these cars are really cheap POS's IMHO... misfires in my experience are always the coil packs if your spark plugs are changed regularly. GL!

CBR6n335Iracer · 04-13-2014, 07:44 AM

as of yesterday i replaced the valve cover, gasket, all plugs and all coils as i was having misfiring issues on 3 and 5, put everything together and car ran correctly, i was proud. ran it all day to the movies and back to a friends and back etc. At first i was running OFT stage 0 map, switched to stock map and ran a log and its been stock for the rest of the day. went to go to the local autocross today, loaded map0 again, and started off driving fine then all of a sudden, it shakes violently when giving it gas, especially around 3k rpms, and no noticeable vibrations during idle, SES light came on with the following codes;
ps9cf, p2aaf, p29d9, and p2f49. What do they mean, and what the heck happened?

Sean335i · 04-13-2014, 06:29 PM

BMW tech told me that the code is more of a phantom code anyhow. It will accompany others (i.e. misfire) but its nothing to worry about.

clear the misfire and the code will likely clear on its own in time, if it stays and you have no other symptoms, its likely just a phantom code hanging around

Jklad · 04-14-2014, 09:26 AM

With my situation above this was when my dme fried. I had different codes than you but hope you don't have the same issue I did, hopefully you have an msd81 Ecu car.

franzzz · 04-15-2014, 03:43 AM

Sometime The 2AAF code appears on my car with the procede Rev3 Stage 1 Maps

Jnat · 04-17-2014, 03:45 PM

I always have the code, tuned or not. I haven't read anything other then ignore it?

München · 10-12-2015, 01:46 AM

after replacing the HPFP and the Low Pressure
sensor occasionally I will have this code. note I have refrained from using E85 but run the JB4 of auto learn and have this. the only thing inwanto do is replace the injectors since BMW only changed 3. I want I replace all 6 and a fresh set of iridiums.

04-05-2012, 09:12 PM	#1
CT335xi Major 688 Rep 1,439 Posts Drives: 2022 x5 m50i, 2005 evo 8 Join Date: Dec 2011 Location: Newtown, Ct iTrader: (0)	Code P2AAF should I be concerned? Ok before you guys give me a a hard time and tell me to search, I did . I did find that thread that Mr . 5 has posted with the codes, I don't know if I'm reading it right but, I did find something that read like this- 2AAF Fuel pump plausibility fix - very common code stock + modified alike, does not trigger a cel just ignore it. Well I was driving today and the car is running strong. I run stage 1 agg. v4.00 and have never had codes, well today I got code P2AAF. Just wanted to know if I should worry? The car has no cel and it starts good no long cranks, as I have heard is a sympton of the fuel pump going. Any ideas?
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04-05-2012, 09:49 PM	#4
skim7x Colonel 213 Rep 2,558 Posts Drives: 335i, C63 AMG Join Date: Sep 2006 Location: USA iTrader: (4) Garage List 2007 335i [10.00]	you don't sound stupid. you found your answer. likely low pressure fuel pump... i had that with one of the v300 maps. load the v401 map __________________ '07 Space Gray 335i coupe - R.I.P. COBB ProTuned \| AMS \| CP-e \| BMS \| Quaife
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03-15-2013, 10:32 AM	#7
Jklad Lieutenant Colonel 424 Rep 1,643 Posts Drives: 2007 335i Coupe Join Date: Nov 2010 Location: Palatine, IL iTrader: (0)	Hi, does anyone no anything abou when the p2aaf is combined with misfires on all cylinders, e.g. p29cf,p29cd,p29ce,p29cc? Thanks
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03-15-2013, 11:48 AM	#9
Jklad Lieutenant Colonel 424 Rep 1,643 Posts Drives: 2007 335i Coupe Join Date: Nov 2010 Location: Palatine, IL iTrader: (0)	Thanks Skim - I spoke with Cobb, and they verified that it's usually not a code to worry about. I'll try replacing the spark plugs and coil packs for the 3 misfiring cylinders and go from there.
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03-15-2013, 12:17 PM	#10
skim7x Colonel 213 Rep 2,558 Posts Drives: 335i, C63 AMG Join Date: Sep 2006 Location: USA iTrader: (4) Garage List 2007 335i [10.00]	Sounds good! The coil packs on these cars are really cheap POS's IMHO... misfires in my experience are always the coil packs if your spark plugs are changed regularly. GL! __________________ '07 Space Gray 335i coupe - R.I.P. COBB ProTuned \| AMS \| CP-e \| BMS \| Quaife
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04-13-2014, 07:44 AM	#11
CBR6n335Iracer Private 5 Rep 60 Posts Drives: 2007 335I Join Date: May 2013 Location: Killeen, TX iTrader: (0)	as of yesterday i replaced the valve cover, gasket, all plugs and all coils as i was having misfiring issues on 3 and 5, put everything together and car ran correctly, i was proud. ran it all day to the movies and back to a friends and back etc. At first i was running OFT stage 0 map, switched to stock map and ran a log and its been stock for the rest of the day. went to go to the local autocross today, loaded map0 again, and started off driving fine then all of a sudden, it shakes violently when giving it gas, especially around 3k rpms, and no noticeable vibrations during idle, SES light came on with the following codes; ps9cf, p2aaf, p29d9, and p2f49. What do they mean, and what the heck happened?
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04-13-2014, 06:29 PM	#12
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]	BMW tech told me that the code is more of a phantom code anyhow. It will accompany others (i.e. misfire) but its nothing to worry about. clear the misfire and the code will likely clear on its own in time, if it stays and you have no other symptoms, its likely just a phantom code hanging around __________________ 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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04-14-2014, 09:26 AM	#13
Jklad Lieutenant Colonel 424 Rep 1,643 Posts Drives: 2007 335i Coupe Join Date: Nov 2010 Location: Palatine, IL iTrader: (0)	With my situation above this was when my dme fried. I had different codes than you but hope you don't have the same issue I did, hopefully you have an msd81 Ecu car. __________________ 2007 E92 335i MT
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04-15-2014, 03:43 AM	#14
franzzz Captain 144 Rep 932 Posts Drives: BMW M4 Join Date: Feb 2010 Location: ITALY iTrader: (0)	Sometime The 2AAF code appears on my car with the procede Rev3 Stage 1 Maps __________________ BMW F82 M4 Black MHD CS Map - GTS DKG - Navi -Performance Brake RSL1 Pads - USB - DivX-DVD - Bluetooth - VoiceControl - Connect - Apps - Online - H&K - TrafficInfo - SpLimInfo - WhiteMerino- PDC - Cam - Adaptive Led - Antitheft - CP Steering- Performance ST - Adaptive CP Setup - GarageDoorOpen - Pipercross - Stock Exhaust - Mdrivers Pack - 437M Wheels
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04-17-2014, 03:45 PM	#15
Jnat DisplacementReplacement 914 Rep 1,439 Posts Drives: 2020 X3M Join Date: Sep 2012 Location: South Jersey iTrader: (0)	I always have the code, tuned or not. I haven't read anything other then ignore it?
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10-12-2015, 01:46 AM	#16
München Private 10 Rep 76 Posts Drives: Alpine White 335i Join Date: Jul 2011 Location: Northern Virgnia iTrader: (0)	after replacing the HPFP and the Low Pressure sensor occasionally I will have this code. note I have refrained from using E85 but run the JB4 of auto learn and have this. the only thing inwanto do is replace the injectors since BMW only changed 3. I want I replace all 6 and a fresh set of iridiums.
	Appreciate 0 Quote