2BDE fuel high pressure shadow code

TeinBMW · 04-09-2019, 10:02 AM

Sorry to revive this thread but I'm running Stage 2+ MHD and I am getting long cranks after sitting the car for a few days and the shadow code is present.

Everyone who has changed their HPFP, have the codes come up a year later?

Pladi · 04-09-2019, 11:23 AM

Quote:

Originally Posted by TeinBMW

Sorry to revive this thread but I'm running Stage 2+ MHD and I am getting long cranks after sitting the car for a few days and the shadow code is present.

Everyone who has changed their HPFP, have the codes come up a year later?

Ever since i replaced the pump no codes. However i dont run stage 2. I think higher stages put more stress on the pump. Esp the new maps. Lots of people see 3000 psi and oscillations. That cant be good.

An20Olives · 04-09-2019, 11:27 AM

I heard it was an issue with the newer software versions of the car throwing the shadow codes and it isn't something to worry about. I'll try to find the source, my '11 335i throws these codes as well and will have random 1-2 second cranks in temps below 50 degrees outside. Logs look good and the car pulls hard with the tune.

SnapCoupe · 04-09-2019, 12:08 PM

Quote:

Originally Posted by TeinBMW

Sorry to revive this thread but I'm running Stage 2+ MHD and I am getting long cranks after sitting the car for a few days and the shadow code is present.

Everyone who has changed their HPFP, have the codes come up a year later?

I replaced my HPFP and the code was still there the next day. I get long cranks when the car sits as well.

Supermoon · 04-09-2019, 12:48 PM

Replacing HPFP worked for me.
No more long cranks and the code never came back for 4 months so far.

Pladi · 04-09-2019, 01:56 PM

Quote:

Originally Posted by SnapCoupe

I replaced my HPFP and the code was still there the next day. I get long cranks when the car sits as well.

yes but you have more potential issues.. you also had low fuel line pressure to HPFP.. so your case is a bit more complicated.

TeinBMW · 04-09-2019, 03:02 PM

Quote:

Originally Posted by SnapCoupe

I replaced my HPFP and the code was still there the next day. I get long cranks when the car sits as well.

I'm wondering what is causing this as there are many others noticing the same shadow codes.

IllSic_Design · 04-09-2019, 03:42 PM

I had codes ranging from 2FCA, 2FDA, 29DC, 29F2, 2FDB as well as long cranks and cutting out/bucking when going full throttle. I also had my fuel pressure dropping super low when going into boost/full throtte.

New HPFP from fcpeuro cured the issue, no codes since(6 months or so). I knew it wasn't my lpfp as I had just put in a stage 2 from fuel it and even tried my OEM lpfp to make sure it wasn't that. Took a chance on it being fuel pump instead of injectors since I had quite a few fuel pump codes and the low pressure readings.

TeinBMW · 04-09-2019, 03:56 PM

Quote:

Originally Posted by IllSic_Design

I had codes ranging from 2FCA, 2FDA, 29DC, 29F2, 2FDB as well as long cranks and cutting out/bucking when going full throttle. I also had my fuel pressure dropping super low when going into boost/full throtte.

New HPFP from fcpeuro cured the issue, no codes since(6 months or so). I knew it wasn't my lpfp as I had just put in a stage 2 from fuel it and even tried my OEM lpfp to make sure it wasn't that. Took a chance on it being fuel pump instead of injectors since I had quite a few fuel pump codes and the low pressure readings.

Were you getting hesitation when you were giving it throttle? I do get a long crank here and there but its not all the time. It's like once every 5 starts. I am noticing a bit of hesitation when giving it throttle.

IllSic_Design · 04-09-2019, 04:22 PM

Quote:

Originally Posted by TeinBMW

Were you getting hesitation when you were giving it throttle? I do get a long crank here and there but its not all the time. It's like once every 5 starts. I am noticing a bit of hesitation when giving it throttle.

Yes, as I said in my post I would get severe bucking/hesitation when going into boost/or full throttle. If I babied it or drove out of boost or not really on the throttle it would drive fine. My long starts were not every time either, and this all happened within a matter of a few days from the long starts to severe hesitation.

SnapCoupe · 04-09-2019, 04:58 PM

Quote:

Originally Posted by Pladi

yes but you have more potential issues.. you also had low fuel line pressure to HPFP.. so your case is a bit more complicated.

Yes, sorry. I realized I haven't mentioned this on the forum yet, but I was able to track my on-going long crank issue to a solidified diagnosis. After tee-ing a fuel pressure gauge into the HPFP line, I tracked the pressure and compared it to what the DME was commanding the LPFP to do in INPA. The pressure differences I recorded showed that the LPFP itself is healthy and fine, leaving the only culprit to be the fuel pressure regulator sending unit on the drivers side of the tank. https://www.fcpeuro.com/products/bmw...ft-16117163295

I just ordered one and will report back once installed, but I am 99% confident it will fix the long crank issue.

Quote:

Originally Posted by TeinBMW

I'm wondering what is causing this as there are many others noticing the same shadow codes.

If the regulator fixes the pressure shadow codes I will report back. Apparently it is pretty common for the driver side regulator to cause this issue without any hard evidence pointing towards it.

TeinBMW · 04-09-2019, 05:11 PM

Quote:

Originally Posted by SnapCoupe

Yes, sorry. I realized I haven't mentioned this on the forum yet, but I was able to track my on-going long crank issue to a solidified diagnosis. After tee-ing a fuel pressure gauge into the HPFP line, I tracked the pressure and compared it to what the DME was commanding the LPFP to do in INPA. The pressure differences I recorded showed that the LPFP itself is healthy and fine, leaving the only culprit to be the fuel pressure regulator sending unit on the drivers side of the tank. https://www.fcpeuro.com/products/bmw...ft-16117163295

I just ordered one and will report back once installed, but I am 99% confident it will fix the long crank issue.

If the regulator fixes the pressure shadow codes I will report back. Apparently it is pretty common for the driver side regulator to cause this issue without any hard evidence pointing towards it.

Thank you, Looking forward to seeing if that fixes our issues!

Pladi · 04-09-2019, 05:12 PM

Quote:

Originally Posted by SnapCoupe

Yes, sorry. I realized I haven't mentioned this on the forum yet, but I was able to track my on-going long crank issue to a solidified diagnosis. After tee-ing a fuel pressure gauge into the HPFP line, I tracked the pressure and compared it to what the DME was commanding the LPFP to do in INPA. The pressure differences I recorded showed that the LPFP itself is healthy and fine, leaving the only culprit to be the fuel pressure regulator sending unit on the drivers side of the tank. https://www.fcpeuro.com/products/bmw...ft-16117163295

I just ordered one and will report back once installed, but I am 99% confident it will fix the long crank issue.

If the regulator fixes the pressure shadow codes I will report back. Apparently it is pretty common for the driver side regulator to cause this issue without any hard evidence pointing towards it.

So there are multiple of these regulators ?

TeinBMW · 04-09-2019, 11:46 PM

Can someone please post a video of their car hesitating under WOT? I just reseted a few adaptations using MHD and took her for a quick spin and didnt feel anything anymore.

SnapCoupe · 04-10-2019, 04:21 PM

Quote:

Originally Posted by Pladi

So there are multiple of these regulators ?

No. When you pull the rear seat out you can see there are two "units" on each side of the tank. From my understanding the driver side is the "sending unit" or "fuel pressure regulator" and sends fuel from that side of the tank to the LPFP. The right side of the tank has the typical LPFP bucket. From what I have read it is a pretty easy DIY to replace the regulator on the drivers side, with the only challenge being the task of fishing the lines from one side to the other.

DiFFv1 · 04-18-2019, 09:42 AM

Im currently stocking up on some HPFPs. Let me know if FCPeuro is the best/cheapest choice. S/N ive even heard people throw this code 2BDE and have they're WGDC work harder to gain the boost that they needed. This has to be a 2011+ 335 Problem N55 Mainly

lwgrenier · 04-18-2019, 09:47 AM

Quote:

Originally Posted by DiFFv1

Im currently stocking up on some HPFPs. Let me know if FCPeuro is the best/cheapest choice. S/N ive even heard people throw this code 2BDE and have they're WGDC work harder to gain the boost that they needed. This has to be a 2011+ 335 Problem N55 Mainly

Stocking up on HPFPs? Just buy one from FCPeuro and they'll give you another if it fails. Also I can't see fueling issues and WGDC being related... you can't compensate for a lack of fuel with more air.

DiFFv1 · 04-18-2019, 09:50 AM

Quote:

Originally Posted by lwgrenier

Stocking up on HPFPs? Just buy one from FCPeuro and they'll give you another if it fails. Also I can't see fueling issues and WGDC being related... you can't compensate for a lack of fuel with more air.

Yes sir, i am going to purchase from them then. Didnt know if there was a better option. So with that being said.. Boost leak would be the flaw?

DiFFv1 · 04-20-2019, 07:32 AM

Bump** Update: Just made a new thread here -> https://www.e90post.com/forums/showthread.php?t=1605768

i believe me and a couple guys have found out the issue with this. check it out

DiFFv1 · 04-25-2019, 07:24 AM

Bump** Update: Regulator Worked -> https://www.e90post.com/forums/showthread.php?t=1605768

N55lif3 · 06-14-2019, 02:03 AM

Clogged fuel injector. Take out your coils/plugs for any signs. Listen to your injectors.

fend78 · 09-01-2022, 12:52 PM

Hey guys,

My 2011 bmw 335i threw me an error yesterday and said engine malfunction engine operating at reduced output. The car now runs slower. I check the diag codes and got these 3. 2c01, 2bde, and 2bfo code.

I was going to replace the HPFP but when I go to order the new one I have 2 options. One of them looks like the complete pump which is part#13517616446 and the other part#13518604231.

They are both called HPFP but im not sure which one to replace. the price difference is massive.

Does anyone know if I should replace the whole thing or just the smaller part?

04-09-2019, 10:02 AM	#67
TeinBMW Lieutenant Colonel 133 Rep 1,945 Posts Drives: 2011 335xi Msport, Conv, Tech Join Date: May 2013 Location: Calgary iTrader: (2) Garage List 2011 BMW 335xi [7.00]	Sorry to revive this thread but I'm running Stage 2+ MHD and I am getting long cranks after sitting the car for a few days and the shadow code is present. Everyone who has changed their HPFP, have the codes come up a year later? __________________ \|11 335XI N55 \| M SPORT \| VRSF CP \| BMW PE \| BMS INSTAKE \| VRSF 7" IC \| MHD STAGE 2+ \| ER CP \|
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04-09-2019, 11:27 AM	#69
An20Olives Senior VP of spite 80 Rep 108 Posts Drives: 09 335i, 11 335xi, 17 X3 M40i, Join Date: Sep 2018 Location: Pennsylvania iTrader: (0) Garage List 2015 BMW M4 [0.00] 2017 X3 M40i [0.00]	I heard it was an issue with the newer software versions of the car throwing the shadow codes and it isn't something to worry about. I'll try to find the source, my '11 335i throws these codes as well and will have random 1-2 second cranks in temps below 50 degrees outside. Logs look good and the car pulls hard with the tune. __________________ The Olives Current: 2015 M4, 2018 X3 M40i, 2018 Elantra Retired: 2009 335i, 2011 335xi
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04-09-2019, 12:48 PM	#71
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]	Replacing HPFP worked for me. No more long cranks and the code never came back for 4 months so far. __________________ 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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04-09-2019, 03:42 PM	#74
IllSic_Design Colonel 2123 Rep 2,758 Posts Drives: 09 E92 335i Join Date: Jun 2016 Location: Northern California iTrader: (1)	I had codes ranging from 2FCA, 2FDA, 29DC, 29F2, 2FDB as well as long cranks and cutting out/bucking when going full throttle. I also had my fuel pressure dropping super low when going into boost/full throtte. New HPFP from fcpeuro cured the issue, no codes since(6 months or so). I knew it wasn't my lpfp as I had just put in a stage 2 from fuel it and even tried my OEM lpfp to make sure it wasn't that. Took a chance on it being fuel pump instead of injectors since I had quite a few fuel pump codes and the low pressure readings.
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04-09-2019, 11:46 PM	#80
TeinBMW Lieutenant Colonel 133 Rep 1,945 Posts Drives: 2011 335xi Msport, Conv, Tech Join Date: May 2013 Location: Calgary iTrader: (2) Garage List 2011 BMW 335xi [7.00]	Can someone please post a video of their car hesitating under WOT? I just reseted a few adaptations using MHD and took her for a quick spin and didnt feel anything anymore. __________________ \|11 335XI N55 \| M SPORT \| VRSF CP \| BMW PE \| BMS INSTAKE \| VRSF 7" IC \| MHD STAGE 2+ \| ER CP \|
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04-18-2019, 09:42 AM	#82
DiFFv1 Captain 90 Rep 627 Posts Drives: 335i l 328xi l X5M Join Date: Nov 2018 Location: Hell's Kitchen iTrader: (0)	Im currently stocking up on some HPFPs. Let me know if FCPeuro is the best/cheapest choice. S/N ive even heard people throw this code 2BDE and have they're WGDC work harder to gain the boost that they needed. This has to be a 2011+ 335 Problem N55 Mainly
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04-20-2019, 07:32 AM	#85
DiFFv1 Captain 90 Rep 627 Posts Drives: 335i l 328xi l X5M Join Date: Nov 2018 Location: Hell's Kitchen iTrader: (0)	Bump** Update: Just made a new thread here -> https://www.e90post.com/forums/showthread.php?t=1605768 i believe me and a couple guys have found out the issue with this. check it out
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04-25-2019, 07:24 AM	#86
DiFFv1 Captain 90 Rep 627 Posts Drives: 335i l 328xi l X5M Join Date: Nov 2018 Location: Hell's Kitchen iTrader: (0)	Bump** Update: Regulator Worked -> https://www.e90post.com/forums/showthread.php?t=1605768
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06-14-2019, 02:03 AM	#87
N55lif3 Member 41 Rep 102 Posts Drives: BMW 335i n55 Join Date: Jun 2019 Location: Saskatchewan iTrader: (0)	Clogged fuel injector. Take out your coils/plugs for any signs. Listen to your injectors.
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09-01-2022, 12:52 PM	#88
fend78 Registered 0 Rep 1 Posts Drives: BMW 335i Join Date: Sep 2022 Location: Ft. Lauderdale iTrader: (0)	2c01 2bde and 2bfo code Hey guys, My 2011 bmw 335i threw me an error yesterday and said engine malfunction engine operating at reduced output. The car now runs slower. I check the diag codes and got these 3. 2c01, 2bde, and 2bfo code. I was going to replace the HPFP but when I go to order the new one I have 2 options. One of them looks like the complete pump which is part#13517616446 and the other part#13518604231. They are both called HPFP but im not sure which one to replace. the price difference is massive. Does anyone know if I should replace the whole thing or just the smaller part?
	Appreciate 0 Quote