Fault codes - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

gmza · 09-13-2008, 08:32 AM

Hi there

Can anyone advise me what may cause the following codes on my 135i:

29F2 Fuel high-pressure system, fuel pressure
Lower rail-pressure threshold value undershot
SAE diagnostic trouble code: P3090
Rail pressure 4075.553 mbar

29DC Cylinder injection cutout
Pressure too low in high-pressure system
SAE diagnostic trouble code P142E
Last at engine temperature 72 C

She is idling rough, doesn't boost at all, struggles to rev past 1500rpm. Only 2,100km on the clock and less than 2 months old.

I have to wait until Monday before the stealer will look at it...

--gm

eunosracr · 09-13-2008, 08:35 AM

Quote:

Originally Posted by gmza

Hi there

Can anyone advise me what may cause the following codes on my 135i:

29F2 Fuel high-pressure system, fuel pressure
Lower rail-pressure threshold value undershot
SAE diagnostic trouble code: P3090
Rail pressure 4075.553 mbar

29DC Cylinder injection cutout
Pressure too low in high-pressure system
SAE diagnostic trouble code P142E
Last at engine temperature 72 C

She is idling rough, doesn't boost at all, struggles to rev past 1500rpm. Only 2,100km on the clock and less than 2 months old.

I have to wait until Monday before the stealer will look at it...

--gm

Oh oh sounds like your fuel pump is on its way out the door...

larryn · 09-13-2008, 08:36 AM

Sounds like your High Pressure Fuel Pump is dying/dead. Unfortunately not uncommon. You're in limp mode right now.

imported_mega · 09-13-2008, 09:19 AM

what's the build date on the car?

gmza · 09-13-2008, 09:46 AM

I cannot remember the build date. I took delivery on 18 July and it usually takes about 6 weeks from build in Germany to delivery in South Africa. That would place the build around the first week of June 2008.

imported_mega · 09-13-2008, 09:47 AM

door sill has a date on it, that's a later build I'm surprised it has a bad pump, and Now I'm worried about mine

mine had one long start so far

gmza · 09-13-2008, 10:10 AM

Unless I'm going blind, I see no dates on the door sill. There are two BMW Germany inlay stickers (black with silver print) -- one with inflation pressures and another with things like the VIN number, engine type code, etc. I've also checked the passenger door (just an airbag info sticker), the fuel cap (warning: unleaded only sticker), and engine bay.

Build is definitely within the past 3 or 4 months as the car was built to order.

I didn't realise the fuel pumps were a regular issue. Is this on all N54's or just the 135i?

larryn · 09-13-2008, 10:26 AM

HPFP issue can be found on all N54 powered cars, 335i, 535i, X6 as well.

Zuzu · 09-13-2008, 06:19 PM

Some build dates like the Ozzie cars are on the top right hand side of the inside of the front bonett.

gmza · 09-16-2008, 03:43 PM

Thanks for the help. On my insistance the dealer fitted a new 3rd generation high-pressure fuel pump and it is going like a Boeing again.

09-13-2008, 08:32 AM	#1
gmza Private Drives: Join Date: Jul 2008 Posts: 85 iTrader: (0) Garage List 2008 BMW 135i Coupe [0.00]	Fault codes Hi there Can anyone advise me what may cause the following codes on my 135i: 29F2 Fuel high-pressure system, fuel pressure Lower rail-pressure threshold value undershot SAE diagnostic trouble code: P3090 Rail pressure 4075.553 mbar 29DC Cylinder injection cutout Pressure too low in high-pressure system SAE diagnostic trouble code P142E Last at engine temperature 72 C She is idling rough, doesn't boost at all, struggles to rev past 1500rpm. Only 2,100km on the clock and less than 2 months old. I have to wait until Monday before the stealer will look at it... --gm
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09-13-2008, 09:19 AM	#4
imported_mega Lieutenant Colonel Drives: various bmw's Join Date: Jul 2007 Location: neverland Posts: 1,983 iTrader: (0)	what's the build date on the car? __________________ You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. Gone but not forgotten.. 1974 2002, 1987 325ic, 1987 325is 1995 M3, 2001 X5, 2007 MCS R56

09-13-2008, 09:47 AM	#6
imported_mega Lieutenant Colonel Drives: various bmw's Join Date: Jul 2007 Location: neverland Posts: 1,983 iTrader: (0)	door sill has a date on it, that's a later build I'm surprised it has a bad pump, and Now I'm worried about mine mine had one long start so far __________________ You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. Gone but not forgotten.. 1974 2002, 1987 325ic, 1987 325is 1995 M3, 2001 X5, 2007 MCS R56

09-13-2008, 06:19 PM	#9
Zuzu Major General Drives: VO 1M Beast Join Date: Mar 2008 Location: SyDnEy Oz Posts: 6,976 iTrader: (0)	Some build dates like the Ozzie cars are on the top right hand side of the inside of the front bonett. __________________ COBB tune ... ETS FMIC ... aFe CAI ... Meisterschaft GT exhaust ... BM OCC ... H&R springs :

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09-13-2008, 08:36 AM	#3
larryn Major General Drives: '97 332ti, '10 E92 M3 Join Date: May 2005 Location: Seattle Posts: 8,287 iTrader: (2)	Sounds like your High Pressure Fuel Pump is dying/dead. Unfortunately not uncommon. You're in limp mode right now.

09-13-2008, 09:46 AM	#5
gmza Private Drives: Join Date: Jul 2008 Posts: 85 iTrader: (0) Garage List 2008 BMW 135i Coupe [0.00]	I cannot remember the build date. I took delivery on 18 July and it usually takes about 6 weeks from build in Germany to delivery in South Africa. That would place the build around the first week of June 2008.

09-13-2008, 10:10 AM	#7
gmza Private Drives: Join Date: Jul 2008 Posts: 85 iTrader: (0) Garage List 2008 BMW 135i Coupe [0.00]	Unless I'm going blind, I see no dates on the door sill. There are two BMW Germany inlay stickers (black with silver print) -- one with inflation pressures and another with things like the VIN number, engine type code, etc. I've also checked the passenger door (just an airbag info sticker), the fuel cap (warning: unleaded only sticker), and engine bay. Build is definitely within the past 3 or 4 months as the car was built to order. I didn't realise the fuel pumps were a regular issue. Is this on all N54's or just the 135i?

09-13-2008, 10:26 AM	#8
larryn Major General Drives: '97 332ti, '10 E92 M3 Join Date: May 2005 Location: Seattle Posts: 8,287 iTrader: (2)	HPFP issue can be found on all N54 powered cars, 335i, 535i, X6 as well.

09-16-2008, 03:43 PM	#10
gmza Private Drives: Join Date: Jul 2008 Posts: 85 iTrader: (0) Garage List 2008 BMW 135i Coupe [0.00]	Thanks for the help. On my insistance the dealer fitted a new 3rd generation high-pressure fuel pump and it is going like a Boeing again.