2BDE fuel high pressure shadow code

SnapCoupe · 02-23-2018, 11:57 AM

Quote:

Originally Posted by Boo$ted_in_ri

To be honest I never logged a pull after my car sputtered when I got on it hard. I was afraid to damage the motor with the lack of fuel. I saw the shadow codes come up and just replaced the pump.

What kind of sputter was it and what were the conditions in which it happened? I experienced a big misfire in 2nd gear rolling into full throttle while merging last week. Car threw a CEL and was misfiring BAD. Read the codes and it was cylinder 2, 3, and 6. Restarted the car and it ran fine. Did a few more pulls since and everything has been normal. I assumed at the moment that it was a bit of bad gas, but I am curious if it could've just been a drop in fuel pressure now.

Boo$ted_in_ri · 02-23-2018, 07:38 PM

Quote:

Originally Posted by SnapCoupe

What kind of sputter was it and what were the conditions in which it happened? I experienced a big misfire in 2nd gear rolling into full throttle while merging last week. Car threw a CEL and was misfiring BAD. Read the codes and it was cylinder 2, 3, and 6. Restarted the car and it ran fine. Did a few more pulls since and everything has been normal. I assumed at the moment that it was a bit of bad gas, but I am curious if it could've just been a drop in fuel pressure now.

Had the exact same thing felt like a misfire as I rolled hard into the gas on the highway. Almost like traction control was going off and a misfire at the same time. All I had was a shadow code for low fuel pressure after all that. And then another code about the hpfp so I’m assuming that was my fuel pressure dropping out. Never threw a misfire code at all.

rich_mane · 02-23-2018, 10:43 PM

I used to get those codes pretty consistently, but they haven't been back for a couple of months.

However, this morning when I went to start my car for the first time, it had a longer than ever crank and showed those two codes when I scanned it. I always give the pump a few seconds to prime after turning the ignition too so I'm not sure what causes it. I'm considering putting a fuel-it stage 2 LPFP in and seeing if anything changes.

Chmilar · 02-23-2018, 10:47 PM

I ended up purchasing a new hpfp and should arrive in 5 to 10. I'll update status after I install

Boo$ted_in_ri · 02-24-2018, 12:11 PM

Quote:

Originally Posted by rich_mane

I used to get those codes pretty consistently, but they haven't been back for a couple of months.

However, this morning when I went to start my car for the first time, it had a longer than ever crank and showed those two codes when I scanned it. I always give the pump a few seconds to prime after turning the ignition too so I'm not sure what causes it. I'm considering putting a fuel-it stage 2 LPFP in and seeing if anything changes.

It’s not the low pressure that’s the problem so upgrading that won’t help at all

Chmilar · 03-04-2018, 07:45 PM

so. New HPFP is in. no code yet. Cold start is instant and my timing corrections have improved significantly!!!

Supermoon · 03-05-2018, 06:24 AM

Quote:

Originally Posted by Chmilar

so. New HPFP is in. no code yet. Cold start is instant and my timing corrections have improved significantly!!!

Does your car pull stronger than before? Especially above 70mph?

Chmilar · 03-05-2018, 10:22 AM

I would say it pulls stronger. it just feels like more constant power that doesn't die out at higher rpm. Smoother as such

SnapCoupe · 03-05-2018, 11:05 AM

Quote:

Originally Posted by Chmilar

so. New HPFP is in. no code yet. Cold start is instant and my timing corrections have improved significantly!!!

Well, I guess this is good and bad news. Good news being we have a pretty solid solution to they symptoms everyone is having. Bad news being replacing the fuel pump.

Chmilar · 03-05-2018, 11:12 AM

Quote:

Originally Posted by SnapCoupe

Quote:

Originally Posted by Chmilar

so. New HPFP is in. no code yet. Cold start is instant and my timing corrections have improved significantly!!!

Well, I guess this is good and bad news. Good news being we have a pretty solid solution to they symptoms everyone is having. Bad news being replacing the fuel pump.

fuel pump is relatively easy diy. there is a diy from fuel it that took them 20 mins to take off manifold. then as long as you have the correct tools, another 15 or less for the fuel pump.

I did mine over the course of a few hours with a half assed soak and scrub Intake valves

Boo$ted_in_ri · 03-05-2018, 09:37 PM

My car has still been good since the new pump. Glad your problem is fixed

SnapCoupe · 03-06-2018, 07:37 AM

Quote:

Originally Posted by Chmilar

fuel pump is relatively easy diy. there is a diy from fuel it that took them 20 mins to take off manifold. then as long as you have the correct tools, another 15 or less for the fuel pump.

I did mine over the course of a few hours with a half assed soak and scrub Intake valves

Thats good to hear. As I mentioned in an earlier post, my dealer said they would good-will a majority of the cost but in order for them to do that there must be a code pointing towards the pump. Unfortunately, the shadow code only comes up on MHD and not on BMW's software.

Pladi · 03-06-2018, 08:29 AM

What pump version did you order and from where if you dont mind me asking.

Chmilar · 03-06-2018, 09:13 AM

Quote:

Originally Posted by Pladi

What pump version did you order and from where if you dont mind me asking.

BMW Remanufactured High Pressure Fuel Pump - Genuine BMW 13517616446

Fcpeuro. lifetime guarantee

Pladi · 03-06-2018, 12:07 PM

Quote:

Originally Posted by Chmilar

BMW Remanufactured High Pressure Fuel Pump - Genuine BMW 13517616446

Fcpeuro. lifetime guarantee

thanks. What is the rail pressure with the new pump under WOT ? have you measured ?

maddmatth · 03-07-2018, 09:31 PM

Quote:

Originally Posted by SnapCoupe

Thats good to hear. As I mentioned in an earlier post, my dealer said they would good-will a majority of the cost but in order for them to do that there must be a code pointing towards the pump. Unfortunately, the shadow code only comes up on MHD and not on BMW's software.

Yeah I had that same frustration. My workshop wasn't a dealer but they did license the BMW software and it didn't show the code. Only got it replaced once it made the car sputter and triggered a generic fuel pressure code.
My guess is BMW only intended shadow codes to be there for investigations/debugging involving their head office and not regular diagnostics at workshops.

Chmilar · 03-10-2018, 09:23 AM

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

rich_mane · 03-10-2018, 10:18 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

This is why I was going to replace my LPFP first. Even though a few posts above it was clarified that the LPFP has nothing to do with the HPFP

Are you still getting hpfp pressure dips or timing corrections or anything?

Chmilar · 03-10-2018, 10:22 AM

Quote:

Originally Posted by rich_mane

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

This is why I was going to replace my LPFP first. Even though a few posts above it was clarified that the LPFP has nothing to do with the HPFP

Are you still getting hpfp pressure dips or timing corrections or anything?

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

Supermoon · 03-10-2018, 10:44 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

I already ordered a HPFP and it's on the way. Should I return it?

Supermoon · 03-10-2018, 10:49 AM

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

Chmilar · 03-10-2018, 10:57 AM

if your logs look good. I wouldn't bother. maybe time to upgrade to a stage 2 lpfp and try that

02-23-2018, 10:43 PM	#25
rich_mane First Lieutenant 139 Rep 227 Posts Drives: 2011 E92 335i Join Date: Jan 2016 Location: S.FL iTrader: (1)	I used to get those codes pretty consistently, but they haven't been back for a couple of months. However, this morning when I went to start my car for the first time, it had a longer than ever crank and showed those two codes when I scanned it. I always give the pump a few seconds to prime after turning the ignition too so I'm not sure what causes it. I'm considering putting a fuel-it stage 2 LPFP in and seeing if anything changes.
	Appreciate 0 Quote

02-23-2018, 10:47 PM	#26
Chmilar Enlisted Member 14 Rep 43 Posts Drives: 2011 335xi FBO Join Date: Jan 2018 Location: Vancouver iTrader: (0)	I ended up purchasing a new hpfp and should arrive in 5 to 10. I'll update status after I install
	Appreciate 2 Johnny Boost323.50 Supermoon166.00 Quote

03-04-2018, 07:45 PM	#28
Chmilar Enlisted Member 14 Rep 43 Posts Drives: 2011 335xi FBO Join Date: Jan 2018 Location: Vancouver iTrader: (0)	so. New HPFP is in. no code yet. Cold start is instant and my timing corrections have improved significantly!!!
	Appreciate 1 Supermoon166.00 Quote

03-05-2018, 10:22 AM	#30
Chmilar Enlisted Member 14 Rep 43 Posts Drives: 2011 335xi FBO Join Date: Jan 2018 Location: Vancouver iTrader: (0)	I would say it pulls stronger. it just feels like more constant power that doesn't die out at higher rpm. Smoother as such
	Appreciate 0 Quote

03-05-2018, 09:37 PM	#33
Boo$ted_in_ri Private First Class 30 Rep 159 Posts Drives: 2011 335i Join Date: Apr 2017 Location: RI iTrader: (0)	My car has still been good since the new pump. Glad your problem is fixed
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03-06-2018, 08:29 AM	#35
Pladi Lieutenant Colonel 718 Rep 1,753 Posts Drives: 2011 335i xdrive Join Date: Nov 2017 Location: Waterloo, ON Canada iTrader: (0)	What pump version did you order and from where if you dont mind me asking.
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03-10-2018, 09:23 AM	#39
Chmilar Enlisted Member 14 Rep 43 Posts Drives: 2011 335xi FBO Join Date: Jan 2018 Location: Vancouver iTrader: (0)	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
	Appreciate 1 Johnny Boost323.50 Quote

03-10-2018, 10:49 AM	#43
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]	Anyone out there who's run MHD OTS map for months without 2BDE code? __________________ 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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03-10-2018, 10:57 AM	#44
Chmilar Enlisted Member 14 Rep 43 Posts Drives: 2011 335xi FBO Join Date: Jan 2018 Location: Vancouver iTrader: (0)	if your logs look good. I wouldn't bother. maybe time to upgrade to a stage 2 lpfp and try that
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