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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Engine Malfunction (P29F1)



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      09-25-2013, 05:53 AM   #1
jake1829
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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
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2009 E92 6AT SG 335i Msport :
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      09-25-2013, 05:57 AM   #2
BD_e92
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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
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thanks, well will be dropping off the car at the workshop tomorrow then
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2009 E92 6AT SG 335i Msport :
OFT 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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      12-21-2013, 03:53 PM   #4
blackshan
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Quote:
Originally Posted by BD_e92 View Post
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?!
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      12-21-2013, 05:56 PM   #5
BD_e92
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Quote:
Originally Posted by blackshan View Post
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
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      12-21-2013, 08:30 PM   #6
jake1829
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Quote:
Originally Posted by blackshan View Post
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
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2009 E92 6AT SG 335i Msport :
OFT 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, 11:47 AM   #7
blackshan
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Thanx for the replies!
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