2BDE fuel high pressure shadow code

Johnny Boost · 03-10-2018, 11:12 AM

Quote:

Originally Posted by Chmilar

Well. the god damn code has some back. WTF. took 1 week to the day !

I'm wondering now if it's possible my LPFP is going bad causing low pressure to the HPFP,?

anyone know if this is possible? n55 doesn't have the lpfp sensor :S

Yep... I've replaced hpfp and lpfp and still get the code...

Chmilar · 03-10-2018, 11:13 AM

Quote:

Originally Posted by Johnny Boost

Quote:

Originally Posted by Chmilar

Well. the god damn code has some back. WTF. took 1 week to the day !

I'm wondering now if it's possible my LPFP is going bad causing low pressure to the HPFP,?

anyone know if this is possible? n55 doesn't have the lpfp sensor :S

Yep... I've replaced hpfp and lpfp and still get the code...

do you get timing corrections?

Supermoon · 03-10-2018, 11:24 AM

Is Stage 2 LPFP any better with pump gas?

Chmilar · 03-10-2018, 11:35 AM

Quote:

Originally Posted by Supermoon

Is Stage 2 LPFP any better with pump gas?

instead of replacing. I consider it a time to upgrade.

CurtisP87 · 03-10-2018, 02:47 PM

Quote:

Originally Posted by SnapCoupe

Unfortunately, the shadow code only comes up on MHD and not on BMW's software.

Thats a real bummer....I've got an appointment next week to get my car in to have this looked at, but I assumed the dealers scanners would pick up shadow codes....guess I'm gonna cancel that...

rich_mane · 03-10-2018, 04:18 PM

Quote:

Originally Posted by Chmilar

the HPFP logs look fine ... but the timing correction are still there ... It's so annoying as I have done plugs. coils. hpfp. valve cleaning and still same results. IAT and octane are fine as well . Stock tune was getting them too

I feel that the lpfp would have to keep a steady PSI to the HPFP for the hpfp to run efficiently. which could cause corrections...no ?

I'm going to do a compression test later to test compression

Are they serious timing corrections? I get a couple cylinder corrections once in a while but nothing too serious or consistent. I mainly just run into some HPFP pressure dips to about 1700psi right at the beginning of a full throttle pull but is steady at ~2200-2300psi after that. That's why I was thinking maybe it's just the initial low pressure delivery isn't strong enough with the ethanol blend. I know it can only handle so much before running into problems. Plus it's an easier job and a mod I definitely want to do at some point

But if your rail pressure holds strong then I wouldn't think a new lpfp would do much in your case...

maddmatth · 03-10-2018, 05:14 PM

Quote:

Originally Posted by Supermoon

Anyone out there who's run MHD OTS map for months without 2BDE code?

Yep, over a year since my HPFP was replaced and I've been running MHD maps since well before that. The HPFP replacement eliminated the code.

SnapCoupe · 03-17-2018, 06:51 PM

As I have been continuing to look into remedying my fuel issue I was able to find something new that may be of interest to some of those who have been experiencing long cranks and shadow codes. Today I used BMW's ISTA software to run a few fuel checks and see if the pressures were meeting their correct values. During the test, the pressures are checked after the LPFP in the tank and after the HPFP on the fuel rail. The HPFP was meeting each pressure test (50, 80, 100 bar) and came back with no faults, but during the test ISTA caught an issue with the low pressure system saying "a leak was detected during the low pressure test". In the ISTA software, underneath this statement it says "If there is a customer complaint that the start duration is too long, replace the electric fuel pump". Considering I cannot smell or see fuel the leak must be within the pump itself.

Unfortunately considering the LPFP is not covered under warranty like the HPFP, I might just wait this out to see if it fails completely. Though, this could remedy the symptoms many of us are experiencing.

weehe126 · 03-17-2018, 10:57 PM

Well the HPFP isn't covered under any special warranty either.

SnapCoupe · 03-18-2018, 12:57 PM

Quote:

Originally Posted by weehe126

Well the HPFP isn't covered under any special warranty either.

Its covered under the 70k extended warranty. BMW is also willing to good will a majority of it outside of 70k.

weehe126 · 03-18-2018, 06:23 PM

Quote:

Originally Posted by SnapCoupe

Its covered under the 70k extended warranty. BMW is also willing to good will a majority of it outside of 70k.

Not for N55s

SnapCoupe · 03-18-2018, 10:41 PM

Quote:

Originally Posted by weehe126

Not for N55s

I'm not sure about your particular car, but for mine it is. I even had our warranty manager go over the percentages of BMW NA's goodwill coverage % intervals over 70k miles.

Pladi · 03-20-2018, 02:44 PM

I have been reading this thread with interest and i too see this shadow code but have never had long cranks. My HPFP is logging 2200 PSI during WOT across all RPM ranges. (so very healthy numbers)

I really dont think that this shadow code means anything.. for all that we know every single car is throwing this code at some point... I dont think the code alone means you have a HPFP issue.. Its hard for me to believe because my car runs great..

Johnny Boost · 03-20-2018, 02:47 PM

Quote:

Originally Posted by Pladi

I have been reading this thread with interest and i too see this shadow code but have never had long cranks. My HPFP is logging 2200 PSI during WOT across all RPM ranges. (so very healthy numbers)

I really dont think that this shadow code means anything.. for all that we know every single car is throwing this code at some point... I dont think the code alone means you have a HPFP issue.. Its hard for me to believe because my car runs great..

Yes I suspect the same. Hopefully this gets fixed by the upcoming update. I wouldn't go replacing a bunch of parts until it gets figured out.

Pladi · 03-21-2018, 09:44 AM

Quote:

Originally Posted by Johnny Boost

Yes I suspect the same. Hopefully this gets fixed by the upcoming update. I wouldn't go replacing a bunch of parts until it gets figured out.

Thats exactly it.. The best indicator of HPFP performance is the rail pressure... If your rail pressure is good then the pump is doing its job.. So people should not just replace the pump because of this code.. its simply not enough information.

CurtisP87 · 03-21-2018, 06:09 PM

Quote:

Originally Posted by Pladi

I have been reading this thread with interest and i too see this shadow code but have never had long cranks. My HPFP is logging 2200 PSI during WOT across all RPM ranges. (so very healthy numbers)

I really dont think that this shadow code means anything.. for all that we know every single car is throwing this code at some point... I dont think the code alone means you have a HPFP issue.. Its hard for me to believe because my car runs great..

I was getting codes 2BDE and 2BF0, and experiencing long cranks. Logs showed rail pressure of >2k psi during WOT pulls, but it would drop to below 1k during idle, and sometimes be around 1.2-1.3k during light load (which I have no idea if that's normal or not, just my experience). Car drove fine, other than the long cranks. No check engine light or warnings on dash.

I took it to the dealer, told them I had long cranks and those two codes, and that I thought my fuel pump might be going out. They performed a "fuel system test" and concluded that my HPFP was defective and suggested replacement.

I've had the car back for a week, long cranks are gone and codes haven't returned.

Evilchef71 · 03-23-2018, 08:14 PM

Soooo I'm getting this code too, but only when I go WOT. This means I need a new HPFP? I'm the second owner of the car and I just hit 90k is this something BWM will cover or should I just bite the bullet and put one in myself?

Supermoon · 03-23-2018, 09:09 PM

Quote:

Originally Posted by Evilchef71

Soooo I'm getting this code too, but only when I go WOT. This means I need a new HPFP? I'm the second owner of the car and I just hit 90k is this something BWM will cover or should I just bite the bullet and put one in myself?

Can't really tell without a log.

hetzle · 03-25-2018, 07:56 PM

Quote:

Originally Posted by Johnny Boost

I had long cranks periodically before the new hpfp and lpfp, and I still have them today.

I was in the same boat as you until last week when I replaced all my injectors. No more long cranks or slight misfires at idle.

redwildcat17 · 08-11-2018, 01:54 PM

Also in the same boat. 2011 e90 mhd 1+ and had these shadow codes turn up the other day. My car runs great no long cranks or stutters at high rpm, my car has 64k on it so wondering if I should take it to the dealer and see what they can do under warranty or just leave it.

cahme · 08-11-2018, 09:17 PM

I had stated getting the shadow codes along with the 2BEF in Dec. Then, in June, I started to get occasional long starts after sitting overnight which got more frequent to the point it was almost every morning.

I changed my HPFP two weeks ago and both the long starts and codes haven't returned.

lucasmiller2015 · 08-12-2018, 02:13 AM

Quote:

Originally Posted by Chmilar

so I'm getting this shadow code

2BDE Fuel high pressure on enabling of injection: pressure to low.

can't find much online about it

I have what I consider longer then normal cold starts and a little hesitation when I hit the gas. HPFP drops about 2-400 psi when I first hit the gas

anyone else experience. Hpfp going out ?

I had long cranks and these same codes. The dealer replaced both the hpfp and the high pressure fuel sensor (part number 13537620946 on my 03/2011 N55). No more codes or long cranks.

https://www.realoem.com/bmw/enUS/sho...56#13537620946

Not under any warranty from BMW, but I have Maxcare from Carmax, which covered it completely. ~$2100 for the pump, sensor, and labor.

03-10-2018, 11:24 AM	#47
Supermoon Lieutenant 166 Rep 429 Posts Drives: 2011 e92 335xi Join Date: Aug 2015 Location: Seoul iTrader: (6) Garage List 2011 BMW 335i xDriv ... [10.00]	Is Stage 2 LPFP any better with pump gas? __________________ 2011 E92 335i xDrive Pure Stage 1 \| DV+ & Inlet \| Injen Intake \| M3 Cowl \| ETS 5" FMIC & CP \| Aquamist HFS4 Direct Port \| CSF Radiator \| Wagner Catted DP \| BMW PE \| Apex FL-5 \| Michelin PS4S \| 335is Engine mount \| SDW Monoball thrust arms \| UUC Swaybars & SS Brake lines \| Bilstein B8 \| Dinan Springs & Shock mounts \| Whiteline RSFB \| M3 Rear Control arms \| Manzo Toe arms \| Wavetrac LSD
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03-17-2018, 06:51 PM	#52
SnapCoupe BMW Portland 224 Rep 524 Posts Drives: Z4M Coupe/E90 335i Join Date: May 2015 Location: Portland, OR iTrader: (0)	As I have been continuing to look into remedying my fuel issue I was able to find something new that may be of interest to some of those who have been experiencing long cranks and shadow codes. Today I used BMW's ISTA software to run a few fuel checks and see if the pressures were meeting their correct values. During the test, the pressures are checked after the LPFP in the tank and after the HPFP on the fuel rail. The HPFP was meeting each pressure test (50, 80, 100 bar) and came back with no faults, but during the test ISTA caught an issue with the low pressure system saying "a leak was detected during the low pressure test". In the ISTA software, underneath this statement it says "If there is a customer complaint that the start duration is too long, replace the electric fuel pump". Considering I cannot smell or see fuel the leak must be within the pump itself. Unfortunately considering the LPFP is not covered under warranty like the HPFP, I might just wait this out to see if it fails completely. Though, this could remedy the symptoms many of us are experiencing. __________________ 2011 335i N55/6MT/M-Sport MHD Stage 2+, VRSF Downpipe, VRSF 7" FMIC, BMS Intake, BMS Chargepipe, Performance Exhaust Mod, F10 550i Clutch, BMS CDV, BMW Performance SSK, M3 Control Arms, ST Coilovers, Apex ARC-8 wheels, Michelin PS4S
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03-17-2018, 10:57 PM	#53
weehe126 Brigadier General 1161 Rep 3,185 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	Well the HPFP isn't covered under any special warranty either.
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03-20-2018, 02:44 PM	#57
Pladi Lieutenant Colonel 718 Rep 1,753 Posts Drives: 2011 335i xdrive Join Date: Nov 2017 Location: Waterloo, ON Canada iTrader: (0)	I have been reading this thread with interest and i too see this shadow code but have never had long cranks. My HPFP is logging 2200 PSI during WOT across all RPM ranges. (so very healthy numbers) I really dont think that this shadow code means anything.. for all that we know every single car is throwing this code at some point... I dont think the code alone means you have a HPFP issue.. Its hard for me to believe because my car runs great..
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03-23-2018, 08:14 PM	#61
Evilchef71 Enlisted Member 9 Rep 30 Posts Drives: 2011 335xi coupe Join Date: Mar 2018 Location: NH iTrader: (0)	Soooo I'm getting this code too, but only when I go WOT. This means I need a new HPFP? I'm the second owner of the car and I just hit 90k is this something BWM will cover or should I just bite the bullet and put one in myself? __________________ 2011 e92 n55 xdrive, ER chargepipe, AR downpipe, MHD Stage 2, VMR v710
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08-11-2018, 01:54 PM	#64
redwildcat17 Private First Class 31 Rep 140 Posts Drives: 2011 e90 335i xdrive m sport Join Date: Apr 2018 Location: madison, WI iTrader: (0)	Also in the same boat. 2011 e90 mhd 1+ and had these shadow codes turn up the other day. My car runs great no long cranks or stutters at high rpm, my car has 64k on it so wondering if I should take it to the dealer and see what they can do under warranty or just leave it.
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08-11-2018, 09:17 PM	#65
cahme Second Lieutenant 114 Rep 226 Posts Drives: '11 E90 335i Sport MT Join Date: Jul 2015 Location: Texas iTrader: (0)	I had stated getting the shadow codes along with the 2BEF in Dec. Then, in June, I started to get occasional long starts after sitting overnight which got more frequent to the point it was almost every morning. I changed my HPFP two weeks ago and both the long starts and codes haven't returned.
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