Engine Malfunction (P29F1)

jake1829 · 09-25-2013, 05:53 AM

Hi guys,

So been modding my 335i the last 2 months and got my AR downpipes and AA exhaust installed last week

Am running the OFT stg1 map

Tonight when driving, suddenly had the engine light comes on and i-drive pops up and says reducing power ( am assuming this is limp mode) - but couldn't accelerate at all, pulled off the motorway and let the car sit for about 5mins

After 5mins, turned on the car - and everything seemed back to normal and drove home straight away

Grabbed my OFT from my desk and plugged in and from the diagnostic menu i pulled the following codes:

P29F4
P29F5

which i believe is due to the catless downpipe ( haven't applied the OFT toggle to switch those codes off yet)

but i am not sure what P29F1 code is

what is that in relation too?

Also had my logs analysed recently from the Vishnu Performance guys as i was getting a custom tune

and they noticed from my logs:

Now from the logs you sent we for some reason it seems like you a slight down on boost at high rpm. I want you to make sure that there is no boost leak. I have had issues with AA bov that leaks

wonder if this is related to this as well

thanks

BD_F22 · 09-25-2013, 05:57 AM

P29f1 is fuel pressure plausibility.. I was getting this intermittently last week so my car is at bmw right now getting the fuel pump and injectors checked

jake1829 · 09-25-2013, 06:06 AM

thanks, well will be dropping off the car at the workshop tomorrow then

blackshan · 12-21-2013, 02:53 PM

Quote:

Originally Posted by BD_e92

P29f1 is fuel pressure plausibility.. I was getting this intermittently last week so my car is at bmw right now getting the fuel pump and injectors checked

What turned out to be ur problem?!

BD_F22 · 12-21-2013, 04:56 PM

Quote:

Originally Posted by blackshan

What turned out to be ur problem?!

For me it turned out to be a fluke and the car has been fine ever since and it never came back

jake1829 · 12-21-2013, 07:30 PM

Quote:

Originally Posted by blackshan

What turned out to be ur problem?!

Not sure what it was in the end, i ended up coding out the fuel pump (2AAF) from my OFT maps and i've never had the issue again

blackshan · 12-22-2013, 10:47 AM

Thanx for the replies!

09-25-2013, 05:53 AM	#1
jake1829 Private First Class 9 Rep 101 Posts Drives: 2009 335i Join Date: May 2013 Location: New Zealand iTrader: (0)	Engine Malfunction (P29F1) Hi guys, So been modding my 335i the last 2 months and got my AR downpipes and AA exhaust installed last week Am running the OFT stg1 map Tonight when driving, suddenly had the engine light comes on and i-drive pops up and says reducing power ( am assuming this is limp mode) - but couldn't accelerate at all, pulled off the motorway and let the car sit for about 5mins After 5mins, turned on the car - and everything seemed back to normal and drove home straight away Grabbed my OFT from my desk and plugged in and from the diagnostic menu i pulled the following codes: P29F4 P29F5 which i believe is due to the catless downpipe ( haven't applied the OFT toggle to switch those codes off yet) but i am not sure what P29F1 code is what is that in relation too? Also had my logs analysed recently from the Vishnu Performance guys as i was getting a custom tune and they noticed from my logs: Now from the logs you sent we for some reason it seems like you a slight down on boost at high rpm. I want you to make sure that there is no boost leak. I have had issues with AA bov that leaks wonder if this is related to this as well thanks __________________ 2009 E92 6AT SG 335i Msport : MHD Tune, AR Downpipes, AA Bov, AA Exhaust, AA Race FMIC, AA Strut Bar, BMS DCI, BMS OCC, BMS Thermostat, WaveTrac LSD, ER Sport Oil Cooler, Michelin PSS, Lux Angel eyes, KW V3 Coilovers, Vossen CV3, DEFIV lockdown kit, Arkym front lip , carbon side splitters
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09-25-2013, 05:57 AM	#2
BD_F22 BD_e92 358 Rep 1,748 Posts Drives: 2015 m235i xDrive Join Date: Nov 2012 Location: NYC iTrader: (9)	P29f1 is fuel pressure plausibility.. I was getting this intermittently last week so my car is at bmw right now getting the fuel pump and injectors checked
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09-25-2013, 06:06 AM	#3
jake1829 Private First Class 9 Rep 101 Posts Drives: 2009 335i Join Date: May 2013 Location: New Zealand iTrader: (0)	thanks, well will be dropping off the car at the workshop tomorrow then __________________ 2009 E92 6AT SG 335i Msport : MHD Tune, AR Downpipes, AA Bov, AA Exhaust, AA Race FMIC, AA Strut Bar, BMS DCI, BMS OCC, BMS Thermostat, WaveTrac LSD, ER Sport Oil Cooler, Michelin PSS, Lux Angel eyes, KW V3 Coilovers, Vossen CV3, DEFIV lockdown kit, Arkym front lip , carbon side splitters
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12-22-2013, 10:47 AM	#7
blackshan Private First Class 10 Rep 181 Posts Drives: 2008 AW 335i Coupe Join Date: Dec 2010 Location: Tulsa, OK iTrader: (2)	Thanx for the replies! __________________ JB4/MHD, Stage 2 lpf,3.5 tmap, AFE DCI AND SCOOPS, ETS 7" Intercooler, AR Catted Downpipes, MMP Inlets,CP-E Exhaust, Carbon FIber CSL Style Trunk lid, M3 Side Skirts, Mtech front lip spoiler, Mtech rear bumper w/carbon diffuser and Alloy Technic 19" matte black rims.
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