Dads Car in limp mode Please help

Joemoy29 · 05-08-2018, 08:44 AM

hello my dad has an 07 328XI and it has been going into limp mode, He brought it to a shop and they charged him 700 to change the accelerator pedal. and the problem came back two days later. These are the codes it has

2D20
P0155
5F77
2E98
2E8B

Any help or direction would be greatly appreciated

335dlci · 05-08-2018, 08:56 AM

Sounds like your dad a few faulty components from the list.

Joemoy29 · 05-08-2018, 09:04 AM

thanks, I understand that lol the problem is the pedal was changed, the one is an o2 sensor but that shouldn't cause limp mode? I don't know what the dme is, and the other two codes seam to be with the battery. The car was running fine so I am trying to figure out which component needs to be changed that would be causing the limp mode.
Thanks, Joseph

335dlci · 05-08-2018, 09:12 AM

A malfunctioing O2 can cause that. The battery fault you think is a battery probably isn't the battery. Sounds like the IBS fron my experience

335dlci · 05-08-2018, 09:17 AM

I could tell you everything to check but I won't post it here. Spent too much time with these cars to throw out a bunch of free info

Joemoy29 · 05-08-2018, 09:30 AM

my reader is saying bank 2 sensor 1 would that be pre or post cat?

335dlci · 05-08-2018, 09:36 AM

Quote:

Originally Posted by Joemoy29

my reader is saying bank 2 sensor 1 would that be pre or post cat?

Pre.

BSM n54iS · 05-08-2018, 11:01 AM

changed the pedal?!

First thing he should go get his money back for that bs so he has an extra $700 to spend on ACTUALLY fixing the issue jc smh

335dlci · 05-08-2018, 11:02 AM

In my whole 13 year career. I have YET to change the pedal assembly for electrical failure.

6ixSpd · 05-08-2018, 11:14 AM

Lol you need a new mechanic, I'd be demanding a refund from that piss poor shop.

Joemoy29 · 05-08-2018, 03:03 PM

its the accelerator module, actually a very common problem on these cars. And turns out that was the problem "again" apparently the guy didn't push the connector on all the way and it came loose

AngelFarelli · 01-24-2020, 01:46 AM

This is a 2d20 link
https://www.google.com/amp/s/amp.red...i_solved_2d20/

I found the issue after many many wire tests I tested every wire coming from the pedal for continuity, obviously not the issue, then I loosened the grounds under the hood and retightened them one at a time and found the ground, it was the one located on the pass side strut tower under the hood, as a recap I was getting the 2d20 code constantly and the reduced power mode, also would see other faults popping up randomly but the 2d20 was consistant.

That is a quote from the link below the first link I found when searching your trouble code .

https://www.n54tech.com/forums/showthread.php?t=52064

So not sure about these codes all together but as far as 2d20 you can either test wires and grounds? Still looking at more links !

05-08-2018, 08:44 AM	#1
Joemoy29 New Member 0 Rep 5 Posts Drives: 2007 328XI Join Date: May 2018 Location: new jersey iTrader: (0)	Dads Car in limp mode Please help hello my dad has an 07 328XI and it has been going into limp mode, He brought it to a shop and they charged him 700 to change the accelerator pedal. and the problem came back two days later. These are the codes it has 2D20 P0155 5F77 2E98 2E8B Any help or direction would be greatly appreciated
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05-08-2018, 08:56 AM	#2
335dlci Lieutenant Colonel 277 Rep 1,575 Posts Drives: 335d Join Date: Apr 2014 Location: Socal iTrader: (0)	Sounds like your dad a few faulty components from the list.
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05-08-2018, 09:04 AM	#3
Joemoy29 New Member 0 Rep 5 Posts Drives: 2007 328XI Join Date: May 2018 Location: new jersey iTrader: (0)	thanks, I understand that lol the problem is the pedal was changed, the one is an o2 sensor but that shouldn't cause limp mode? I don't know what the dme is, and the other two codes seam to be with the battery. The car was running fine so I am trying to figure out which component needs to be changed that would be causing the limp mode. Thanks, Joseph
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05-08-2018, 09:12 AM	#4
335dlci Lieutenant Colonel 277 Rep 1,575 Posts Drives: 335d Join Date: Apr 2014 Location: Socal iTrader: (0)	A malfunctioing O2 can cause that. The battery fault you think is a battery probably isn't the battery. Sounds like the IBS fron my experience
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05-08-2018, 09:17 AM	#5
335dlci Lieutenant Colonel 277 Rep 1,575 Posts Drives: 335d Join Date: Apr 2014 Location: Socal iTrader: (0)	I could tell you everything to check but I won't post it here. Spent too much time with these cars to throw out a bunch of free info Last edited by 335dlci; 05-08-2018 at 09:28 AM..
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05-08-2018, 09:30 AM	#6
Joemoy29 New Member 0 Rep 5 Posts Drives: 2007 328XI Join Date: May 2018 Location: new jersey iTrader: (0)	my reader is saying bank 2 sensor 1 would that be pre or post cat?
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05-08-2018, 11:01 AM	#8
BSM n54iS Brigadier General 2685 Rep 4,202 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	changed the pedal?! First thing he should go get his money back for that bs so he has an extra $700 to spend on ACTUALLY fixing the issue jc smh __________________ '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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05-08-2018, 11:02 AM	#9
335dlci Lieutenant Colonel 277 Rep 1,575 Posts Drives: 335d Join Date: Apr 2014 Location: Socal iTrader: (0)	In my whole 13 year career. I have YET to change the pedal assembly for electrical failure.
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05-08-2018, 11:14 AM	#10
6ixSpd Save the manuals! 6015 Rep 6,746 Posts Drives: '16 M3, '23 718 Spyder Join Date: Feb 2016 Location: 416 iTrader: (4)	Lol you need a new mechanic, I'd be demanding a refund from that piss poor shop. __________________ '16 M3 \| '23 718 Spyder Past: E92 M3, F87 M2, E39 M5, etc
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05-08-2018, 03:03 PM	#11
Joemoy29 New Member 0 Rep 5 Posts Drives: 2007 328XI Join Date: May 2018 Location: new jersey iTrader: (0)	its the accelerator module, actually a very common problem on these cars. And turns out that was the problem "again" apparently the guy didn't push the connector on all the way and it came loose
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01-24-2020, 01:46 AM	#12
AngelFarelli Second Lieutenant 57 Rep 276 Posts Drives: BMW n52 e90 Join Date: Nov 2019 Location: California iTrader: (0)	This is a 2d20 link https://www.google.com/amp/s/amp.red...i_solved_2d20/ I found the issue after many many wire tests I tested every wire coming from the pedal for continuity, obviously not the issue, then I loosened the grounds under the hood and retightened them one at a time and found the ground, it was the one located on the pass side strut tower under the hood, as a recap I was getting the 2d20 code constantly and the reduced power mode, also would see other faults popping up randomly but the 2d20 was consistant. That is a quote from the link below the first link I found when searching your trouble code . https://www.n54tech.com/forums/showthread.php?t=52064 So not sure about these codes all together but as far as 2d20 you can either test wires and grounds? Still looking at more links !
	Appreciate 0 Quote