[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 ?

[Johnny Boost]

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 get the exact same codes. I have a newer hpfp and lpfp. The only response from the MHD guys is to reset your adaptations which doesn't fix anything. Hopefully it will get worked out in the future.

[Chmilar]

Originally Posted by Johnny Boost

I get the exact same codes. I have a newer hpfp and lpfp. The only response from the MHD guys is to reset your adaptations which doesn't fix anything. Hopefully it will get worked out in the future.

How's your cold starts. any indication if HPFP going out? I reset adaptations quite often and it does nothing

[MacE90]

I started to throw this code while experiencing long cranks (3-4) before it would start. I replaced the hpfp which resolved both the long cranks and 2BDE code.

[Johnny Boost]

Originally Posted by Chmilar

How's your cold starts. any indication if HPFP going out? I reset adaptations quite often and it does nothing

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

[Boo$ted_in_ri]

Had the same code with a few others. Replaced my hpfp and now it’s running great. Had the long cranks and car was running terrible under full throttle. Resetting adaptations won’t fix the problem long term if at all.

[Chmilar]

Originally Posted by Boo$ted_in_ri

Had the same code with a few others. Replaced my hpfp and now it’s running great. Had the long cranks and car was running terrible under full throttle. Resetting adaptations won’t fix the problem long term if at all.

were you getting timing corrections at WOT ?

[SnapCoupe]

Originally Posted by Chmilar

were you getting timing corrections at WOT ?

Also curious about this. I have the shadow code and very long cold starts along with timing corrections on almost all of my tunes.

[Chmilar]

Originally Posted by SnapCoupe

Also curious about this. I have the shadow code and very long cold starts along with timing corrections on almost all of my tunes.

this is my exact issue man. even threw in e85 to test with same issues as I figured it was octane. (but it did help ) wondering if this code is because of HPFP. And HPFP is causing my timing corrections

[SnapCoupe]

Originally Posted by Chmilar

this is my exact issue man. even threw in e85 to test with same issues as I figured it was octane. (but it did help ) wondering if this code is because of HPFP. And HPFP is causing my timing corrections

I have been chasing down this issue since I purchased the car to no avail. Anytime it is below 50 degrees and the car has been sitting for more than 3 hours it will experience a long crank. I have tried priming the fuel pump twice (unlocking car, opening door, closing door, locking car) and pressing the ignition before starting the car (manual) but neither of those help the issue. In these conditions the car will either take 5 seconds or more to start on the first crank, or will continue to crank until I press the button once again to stop it, and one more time to restart it. On the second crank it ALWAYS fires up immediately.

All of my logs show signs of normal fuel pressure and nothing out of the ordinary. I work at a BMW dealer and have tried multiple times to get the pump to throw a code to get a fuel pump partly covered under extended warranty. The only thing I see is the shadow code. I have yet to test and see if there are timing corrections on my stock map, but they are present in every version of my custom 92 octane map, as well as in the MHD OTS maps.

[vespa]

Has anyone ever figured out what a "shadow code" is? I asked MHD but they wouldn't say. It seems odd that somehow MHD is able to read codes that can't be seen by ISTA, yet MHD doesn't know what they are reading, why, or how.

And this probably isn't the best thread for this, but has anyone ever seen a car *without* this "shadow code"?

[Chmilar]

Originally Posted by vespa

Has anyone ever figured out what a "shadow code" is? I asked MHD but they wouldn't say. It seems odd that somehow MHD is able to read codes that can't be seen by ISTA, yet MHD doesn't know what they are reading, why, or how.

And this probably isn't the best thread for this, but has anyone ever seen a car *without* this "shadow code"?

i was advised by another member that after replacing his HPFP the code went away and car went back to Normal.

but it's super annoying not knowing for sure if this code is causing issues

[Boo$ted_in_ri]

My car had all these symptoms. Sometimes under full throttle my fuel pressure would be on point and other times the car would skip and bog down. Long cranks and no check engine light just shadow codes. Due to the hpfp actin up it messed with my pre cat 02 sensor. The senor is in charge of long term fuel trims and cold starts. So once I replaced both my car has been 100% since.

[Boo$ted_in_ri]

If all you have are shadow codes for hpfp like I had and fuel pressure, I hate to tell you but your hpfp is going out the door.

[Chmilar]

Originally Posted by Boo$ted_in_ri

If all you have are shadow codes for hpfp like I had and fuel pressure, I hate to tell you but your hpfp is going out the door.

So. hpfp shadow code. long cranks and hesitation when hitting the throttle. it's safe to say HPFP ?

[Boo$ted_in_ri]

Originally Posted by Chmilar

So. hpfp shadow code. long cranks and hesitation when hitting the throttle. it's safe to say HPFP ?

Very safe to say it’s the hpfp. I had all these signs everyone is saying above. And even threw a half engine light and had reduced power. Reset codes and adaptations and it went away but the symptoms stayed. I went through the dealer for the part it was 1250$ with a 400$ core so 850$ once my old one was out. Certain things I don’t care how “oem” they are I’ll always go to the dealer for.

[Johnny Boost]

Originally Posted by Boo$ted_in_ri

Very safe to say it’s the hpfp. I had all these signs everyone is saying above. And even threw a half engine light and had reduced power. Reset codes and adaptations and it went away but the symptoms stayed. I went through the dealer for the part it was 1250$ with a 400$ core so 850$ once my old one was out. Certain things I don’t care how “oem” they are I’ll always go to the dealer for.

When's the last time you checked your codes? I had HPFP replaced by the dealership and still get those codes...

[Boo$ted_in_ri]

Originally Posted by Johnny Boost

When's the last time you checked your codes? I had HPFP replaced by the dealership and still get those codes...

Been checking everyday put the new pump in a week ago. No codes or problems. Did you reset all your adaptations wants the pump was in

[Johnny Boost]

Originally Posted by Boo$ted_in_ri

Been checking everyday put the new pump in a week ago. No codes or problems. Did you reset all your adaptations wants the pump was in

Yes I've reset adaptations and cleared all modules. Please keep us posted if the codes come back.

[SnapCoupe]

My dilemma is in regards to having a "real" code pop up for the HPFP. BMW's diag software doesn't pull anything up related to the shadow code that MHD is showing. If my car was throwing a code for the HPFP I would have it replaced already, but I really don't want to replace it fully out of pocket if there is a potential I can get most of it goodwill'd.

How is it possible that MHD can see this code yet BMW's software cant?

[Chmilar]

Originally Posted by Boo$ted_in_ri

My car had all these symptoms. Sometimes under full throttle my fuel pressure would be on point and other times the car would skip and bog down. Long cranks and no check engine light just shadow codes. Due to the hpfp actin up it messed with my pre cat 02 sensor. The senor is in charge of long term fuel trims and cold starts. So once I replaced both my car has been 100% since.

Did you experience timing corrections at all with the bad hpfp. Did they correct after new pump ?

[Boo$ted_in_ri]

Originally Posted by Chmilar

Did you experience timing corrections at all with the bad hpfp. Did they correct after new pump ?

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.