330i N53 fault code 2AAF fuel pump plausibility

surrey130i · 06-24-2019, 05:22 AM

Low mileage 330i runs a bit rough if you try and pull away from low revs (under 1,400 revs only)

Cleared the codes and after several test runs the code which always comes back is 2AAF fuel pump plausibity.

Anyone experienced this and how did you fix it.

From reading up it sounds like low pressure fuel pump but also read that if there are no other associated fault codes coming up then do not replace.

Anyone been through this please share what you did?

Note - if the car is not driven at low revs its absolutely fine so its just this low revs hesitation which is annoying in traffic jams etc.

Phil325i · 06-24-2019, 09:10 AM

I had similar symptoms. My indy gave the car a full BMW diagnostic and found a faulty low pressure fuel pump control unit. For what's it's worth...

Chappers 71 · 06-24-2019, 12:00 PM

My 35i had 2AAF last year. I didn't have any rough running though, just an EML under hard acceleration. I replaced the low pressure fuel sensor which cured it.

06-24-2019, 05:22 AM	#1
surrey130i Private 6 Rep 92 Posts Drives: 130i convertible Join Date: Jul 2017 Location: uk south iTrader: (0)	330i N53 fault code 2AAF fuel pump plausibility Low mileage 330i runs a bit rough if you try and pull away from low revs (under 1,400 revs only) Cleared the codes and after several test runs the code which always comes back is 2AAF fuel pump plausibity. Anyone experienced this and how did you fix it. From reading up it sounds like low pressure fuel pump but also read that if there are no other associated fault codes coming up then do not replace. Anyone been through this please share what you did? Note - if the car is not driven at low revs its absolutely fine so its just this low revs hesitation which is annoying in traffic jams etc.
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06-24-2019, 09:10 AM	#2
Phil325i Brigadier General 616 Rep 3,194 Posts Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East iTrader: (1) Garage List 2009 BMW 325i Coupe [6.00]	I had similar symptoms. My indy gave the car a full BMW diagnostic and found a faulty low pressure fuel pump control unit. For what's it's worth... __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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06-24-2019, 12:00 PM	#3
Chappers 71 Major General 5483 Rep 5,421 Posts Drives: Beige G31 40ix m sport Join Date: Feb 2016 Location: Kent, The Garden of England iTrader: (0) Garage List 2018 G31 xdrive 40i ... [4.00] 2006 E92 335i SE [9.50]	My 35i had 2AAF last year. I didn't have any rough running though, just an EML under hard acceleration. I replaced the low pressure fuel sensor which cured it. __________________ G31 40ix M Sport E92 335i. E36 328is coupe E39 540i V8 6SP manual E34 3.6 M5. E34 525i sport. VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle
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