E90Post
 


Extreme Powerhouse
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > 2E68 knock sensor 1 and low boost 3100 codes



Reply
 
Thread Tools Search this Thread
      06-30-2018, 02:12 PM   #23
Bimmer_Engineer
Lieutenant Colonel
Bimmer_Engineer's Avatar
1044
Rep
1,667
Posts

Drives: 2007 335i
Join Date: May 2018
Location: Louisiana

iTrader: (0)

Garage List
For me this started with an “engine malfunction - reduced power” warning. Which went away after I turned the car off and turned it back on. I read the codes later that afternoon and plugged the flap in and I’m clear since then. I did a couple of WOT pulls last night to try and test it out...
Appreciate 0
      06-30-2018, 06:50 PM   #24
Julian2485
Major
110
Rep
1,340
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (1)

Quote:
Originally Posted by Bimmer_Engineer View Post
For me this started with an “engine malfunction - reduced power” warning. Which went away after I turned the car off and turned it back on. I read the codes later that afternoon and plugged the flap in and I’m clear since then. I did a couple of WOT pulls last night to try and test it out...
One day mine will keep going into limp mode then another day it won't. So i finally changed the sensor was good for 3 day's then back to limp mode every time i drive
Appreciate 0
      07-06-2018, 10:48 PM   #25
Bimmer_Engineer
Lieutenant Colonel
Bimmer_Engineer's Avatar
1044
Rep
1,667
Posts

Drives: 2007 335i
Join Date: May 2018
Location: Louisiana

iTrader: (0)

Garage List
Quote:
Originally Posted by Julian2485 View Post
One day mine will keep going into limp mode then another day it won't. So i finally changed the sensor was good for 3 day's then back to limp mode every time i drive
Any updates on this? I finally put mine back together after installing a new intercooler and after about 5 minutes it threw the knock sensor and boost codes again...
Appreciate 0
      07-06-2018, 10:52 PM   #26
Julian2485
Major
110
Rep
1,340
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (1)

Quote:
Originally Posted by Bimmer_Engineer View Post
Quote:
Originally Posted by Julian2485 View Post
One day mine will keep going into limp mode then another day it won't. So i finally changed the sensor was good for 3 day's then back to limp mode every time i drive
Any updates on this? I finally put mine back together after installing a new intercooler and after about 5 minutes it threw the knock sensor and boost codes again...
No idea bro i heard of one or two guys getting a dme update and it helped one but not the other guy though smh
Appreciate 0
      07-06-2018, 11:01 PM   #27
Bimmer_Engineer
Lieutenant Colonel
Bimmer_Engineer's Avatar
1044
Rep
1,667
Posts

Drives: 2007 335i
Join Date: May 2018
Location: Louisiana

iTrader: (0)

Garage List
Quote:
Originally Posted by Julian2485 View Post
No idea bro i heard of one or two guys getting a dme update and it helped one but not the other guy though smh
Are you still getting codes?
Appreciate 0
      07-06-2018, 11:03 PM   #28
Julian2485
Major
110
Rep
1,340
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (1)

Quote:
Originally Posted by Bimmer_Engineer View Post
Quote:
Originally Posted by Julian2485 View Post
No idea bro i heard of one or two guys getting a dme update and it helped one but not the other guy though smh
Are you still getting codes?
Yes i am and my clutch is slipping real bad. I'm fbo stock turbos with motiv twin disk clutch. Hadnt had clutch for 2 years yet
Appreciate 0
      07-12-2018, 09:14 AM   #29
Bimmer_Engineer
Lieutenant Colonel
Bimmer_Engineer's Avatar
1044
Rep
1,667
Posts

Drives: 2007 335i
Join Date: May 2018
Location: Louisiana

iTrader: (0)

Garage List
Just to close this out for now...I cleaned the VANOS and the codes are clear...will update again if they come back...
Appreciate 1
      07-12-2018, 11:26 AM   #30
Julian2485
Major
110
Rep
1,340
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (1)

Quote:
Originally Posted by Bimmer_Engineer View Post
Just to close this out for now...I cleaned the VANOS and the codes are clear...will update again if they come back...
Yes please keep us posted
Appreciate 0
      07-16-2018, 06:23 PM   #31
Julian2485
Major
110
Rep
1,340
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (1)

Quote:
Originally Posted by Bimmer_Engineer View Post
Just to close this out for now...I cleaned the VANOS and the codes are clear...will update again if they come back...
What's the status
Appreciate 0
      07-16-2018, 07:37 PM   #32
Bimmer_Engineer
Lieutenant Colonel
Bimmer_Engineer's Avatar
1044
Rep
1,667
Posts

Drives: 2007 335i
Join Date: May 2018
Location: Louisiana

iTrader: (0)

Garage List
Still good here...it’s going to the dealer tomorrow for a few days to fix the body damage they did during the blower motor recall...
Appreciate 1
      07-17-2018, 02:10 AM   #33
Julian2485
Major
110
Rep
1,340
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (1)

Quote:
Originally Posted by Bimmer_Engineer View Post
Still good here...it’s going to the dealer tomorrow for a few days to fix the body damage they did during the blower motor recall...
Ill try cleaning my vanos solenoids like you did then
Appreciate 0
      07-22-2018, 05:22 PM   #34
kenni243
Second Lieutenant
kenni243's Avatar
8
Rep
286
Posts

Drives: 335I Sedan - Black/Black
Join Date: Mar 2007
Location: Worcester

iTrader: (0)

Any update guys? I’m getting the same codes Randomly around 2-3k RPM Engine malfuntion light come on. Scan for codes and got the following.

2AAF
2E69
3100

What I did so far...Cleaned Vanos, replaced plugs, replaced LPFP sensor, All vaccume lines, Walnut blast.
Appreciate 0
      07-22-2018, 07:11 PM   #35
Bimmer_Engineer
Lieutenant Colonel
Bimmer_Engineer's Avatar
1044
Rep
1,667
Posts

Drives: 2007 335i
Join Date: May 2018
Location: Louisiana

iTrader: (0)

Garage List
My car has been at the dealer for a week rechecking the blower motor recall and fixing the body damage they caused the last time it was there but as of last week I’d gone about 500 miles with no codes.

Last edited by Bimmer_Engineer; 07-22-2018 at 09:13 PM..
Appreciate 0
      07-22-2018, 08:35 PM   #36
Julian2485
Major
110
Rep
1,340
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (1)

Quote:
Originally Posted by kenni243 View Post
Any update guys? I’m getting the same codes Randomly around 2-3k RPM Engine malfuntion light come on. Scan for codes and got the following.

2AAF
2E69
3100

What I did so far...Cleaned Vanos, replaced plugs, replaced LPFP sensor, All vaccume lines, Walnut blast.
Still struggling for a fix too change sensor and still getting code and a few other people having this same issue. I wonder if the wiring going to the dme could be messed up
Appreciate 0
      07-23-2018, 08:30 AM   #37
feuer
Major General
feuer's Avatar
United_States
4275
Rep
9,205
Posts

Drives: wife crazy!
Join Date: Apr 2015
Location: Chicago, IL

iTrader: (5)

Quote:
Originally Posted by Bimmer_Engineer View Post
Still good here...it’s going to the dealer tomorrow for a few days to fix the body damage they did during the blower motor recall...
There is a fix for blower motor?
Appreciate 0
      07-23-2018, 09:00 AM   #38
Julian2485
Major
110
Rep
1,340
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (1)

Quote:
Originally Posted by feuer View Post
Quote:
Originally Posted by Bimmer_Engineer View Post
Still good here...it’s going to the dealer tomorrow for a few days to fix the body damage they did during the blower motor recall...
There is a fix for blower motor?
Yea a recall for it they change the wire for it
Appreciate 1
feuer4274.50
      08-01-2018, 04:54 PM   #39
///Motivated
Private First Class
47
Rep
101
Posts

Drives: 335i, i3
Join Date: Jun 2017
Location: San Antonio, TX

iTrader: (0)

Hello all. Please update when you can. I'm having the same problem. I have found many reference to the problem in various threads but not that contain the definitive fix.
Appreciate 0
      08-01-2018, 07:39 PM   #40
Bimmer_Engineer
Lieutenant Colonel
Bimmer_Engineer's Avatar
1044
Rep
1,667
Posts

Drives: 2007 335i
Join Date: May 2018
Location: Louisiana

iTrader: (0)

Garage List
I cleaned my vanos and I’ve been good for almost a month and about 500 miles...
Appreciate 1
      08-20-2018, 10:01 AM   #41
qubansailor
Lieutenant
qubansailor's Avatar
United_States
43
Rep
489
Posts

Drives: 2007 335i
Join Date: Jun 2009
Location: Jacksonville, FL

iTrader: (4)

I have the same issue here. Replaced knock sensor and cleared codes. Ran good for a few days then it came back. Dealer found TSB which requires DME update. Performed all updates then a week later, knock sensor code returned. I'm lost at this point.

Codes 2E68 and 3100

Anyone find a solution?
__________________
(SOLD) E92 335i
Engine: RB//SPEC 2+ SMFW//PTF tune//AA FMIC//AP DP//BMS DCI//BMS CDV Mod//AA BOV//AE Exhaust//
Body: MTEC body w/ M3 side skirts/M3 style CF hood/LCI tails/CSL trunk lid/OSS AE/M3 F/R control arms/Stoptech Cross drilled rotors & steel braided brake lines
Appreciate 0
      08-20-2018, 12:02 PM   #42
Bimmer_Engineer
Lieutenant Colonel
Bimmer_Engineer's Avatar
1044
Rep
1,667
Posts

Drives: 2007 335i
Join Date: May 2018
Location: Louisiana

iTrader: (0)

Garage List
I’m stil good after a vanos cleaning...been about 1.5 months and 1k miles...
Appreciate 0
      08-20-2018, 04:30 PM   #43
Julian2485
Major
110
Rep
1,340
Posts

Drives: Black lci e90 335 xdrive
Join Date: Sep 2013
Location: New york

iTrader: (1)

Quote:
Originally Posted by qubansailor View Post
I have the same issue here. Replaced knock sensor and cleared codes. Ran good for a few days then it came back. Dealer found TSB which requires DME update. Performed all updates then a week later, knock sensor code returned. I'm lost at this point.

Codes 2E68 and 3100

Anyone find a solution?
Had a friend that changed literally everything and did dme update no luck.
Appreciate 0
      09-07-2018, 12:50 PM   #44
Chrisred
Captain
Chrisred's Avatar
Canada
62
Rep
788
Posts

Drives: BMW 335xi coupe
Join Date: Jan 2010
Location: Montreal, Canada

iTrader: (0)

I still get these codes once a month. Then just goes away. Changed sensors about 2yrs ago. Maybe JB4 software related....
__________________
JB4 Trebila tuned cp-e IC AMS exhaust BMS DCI AR DP's METH RB TURBO
19" VMR VB3 Stoptech BBK TC KLINE VORSHLAG SPEC STG 3 OSS design
Appreciate 1
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 04:47 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST