Limp mode on startup

Tyc0 · 01-08-2021, 04:19 PM

Went out to start my car today and after about ten seconds it went into limp. I tried this three or four times, after resetting adaptions. I'm really confused on this as the car was driving fine yesterday. I have been battling with a rough cold start, and I think it's an injector but I don't see how that correlates to this new problem. What seems to happen is the HPFP just turns off and the reading reads the same as the LPFP. I know the HPFP works as I see it jump to 2700psi on startup, then it just turns off and car goes limp. Is it possible for a pump to just go out like this? Here are codes

BSM n54iS · 01-08-2021, 04:21 PM

Do a log of your startup and post

RoughKnight · 01-08-2021, 04:31 PM

Quick google search for one of the most commonly asked questions about the platform

shadow code when hpfp dips below 50psi

clear and if it happens again get ready

Tyc0 · 01-08-2021, 04:55 PM

Well now it's driving normal...I'll post cold start log shortly but I'm not sure I'll be able to recreate this problem

Tyc0 · 01-08-2021, 04:58 PM

Quote:

Originally Posted by RoughKnight

Quick google search for one of the most commonly asked questions about the platform

shadow code when hpfp dips below 50psi

clear and if it happens again get ready

Get ready did what?

01-08-2021, 04:19 PM	#1
Tyc0 Lieutenant 151 Rep 517 Posts Drives: BMW e92 335i Join Date: Sep 2019 Location: Oregon iTrader: (0)	Limp mode on startup Went out to start my car today and after about ten seconds it went into limp. I tried this three or four times, after resetting adaptions. I'm really confused on this as the car was driving fine yesterday. I have been battling with a rough cold start, and I think it's an injector but I don't see how that correlates to this new problem. What seems to happen is the HPFP just turns off and the reading reads the same as the LPFP. I know the HPFP works as I see it jump to 2700psi on startup, then it just turns off and car goes limp. Is it possible for a pump to just go out like this? Here are codes Attached Images
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01-08-2021, 04:21 PM	#2
BSM n54iS Brigadier General 2686 Rep 4,203 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	Do a log of your startup and post __________________ '11 335is BSM MT "BMW Performance Editon" \| '16 Porsche Macan Turbo GruppeM CF Intake \| AR Resonated DP \| ER CP \| Turbosmart RacePort BOV \| Cobb FMIC \| RB Inlets \| RB External Mishi/Turner OCC \| Michelin PS4 \| BMW Performance Springs/Bilstein B8 + Dinan & M3 bits \| BMW Brembo BBK \| BMW Performance CF Spoiler \| BMW Performance CF Lip \| BMW Performance Alcantara \| PS Designs GTS Armrest \| AG H6-40 \| Rear Seat Delete
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01-08-2021, 04:31 PM	#3
RoughKnight Private First Class 54 Rep 174 Posts Drives: BMW 335xi N54 Auto Join Date: Apr 2019 Location: Ottawa Ontario iTrader: (0)	Quick google search for one of the most commonly asked questions about the platform shadow code when hpfp dips below 50psi clear and if it happens again get ready __________________ -------------------------------------------------------- ARM CP, DP, 7.5 FMIC, TiAl Q Bov MHD Stage2+/xHP/xDelete Road to 500hp daily on the way (ya right lol) --------------------------------------------------------
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01-08-2021, 04:55 PM	#4
Tyc0 Lieutenant 151 Rep 517 Posts Drives: BMW e92 335i Join Date: Sep 2019 Location: Oregon iTrader: (0)	Well now it's driving normal...I'll post cold start log shortly but I'm not sure I'll be able to recreate this problem
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