2E68 knock sensor 1 and low boost 3100 codes

Bimmer_Engineer · 06-30-2018, 03:12 PM

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...

Julian2485 · 06-30-2018, 07:50 PM

Quote:

Originally Posted by Bimmer_Engineer

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

Bimmer_Engineer · 07-06-2018, 11:48 PM

Quote:

Originally Posted by Julian2485

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...

Julian2485 · 07-06-2018, 11:52 PM

Quote:

Originally Posted by Bimmer_Engineer

Quote:

Originally Posted by Julian2485

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

Bimmer_Engineer · 07-07-2018, 12:01 AM

Quote:

Originally Posted by Julian2485

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?

Julian2485 · 07-07-2018, 12:03 AM

Quote:

Originally Posted by Bimmer_Engineer

Quote:

Originally Posted by Julian2485

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

Bimmer_Engineer · 07-12-2018, 10:14 AM

Just to close this out for now...I cleaned the VANOS and the codes are clear...will update again if they come back...

Julian2485 · 07-12-2018, 12:26 PM

Quote:

Originally Posted by Bimmer_Engineer

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

Julian2485 · 07-16-2018, 07:23 PM

Quote:

Originally Posted by Bimmer_Engineer

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

Bimmer_Engineer · 07-16-2018, 08:37 PM

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...

Julian2485 · 07-17-2018, 03:10 AM

Quote:

Originally Posted by Bimmer_Engineer

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

kenni243 · 07-22-2018, 06:22 PM

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.

Bimmer_Engineer · 07-22-2018, 08:11 PM

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.

Julian2485 · 07-22-2018, 09:35 PM

Quote:

Originally Posted by kenni243

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

feuer · 07-23-2018, 09:30 AM

Quote:

Originally Posted by Bimmer_Engineer

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?

Julian2485 · 07-23-2018, 10:00 AM

Quote:

Originally Posted by feuer

Quote:

Originally Posted by Bimmer_Engineer

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

///Motivated · 08-01-2018, 05:54 PM

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.

Bimmer_Engineer · 08-01-2018, 08:39 PM

I cleaned my vanos and I’ve been good for almost a month and about 500 miles...

qubansailor · 08-20-2018, 11:01 AM

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?

Bimmer_Engineer · 08-20-2018, 01:02 PM

I’m stil good after a vanos cleaning...been about 1.5 months and 1k miles...

Julian2485 · 08-20-2018, 05:30 PM

Quote:

Originally Posted by qubansailor

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.

Chrisred · 09-07-2018, 01:50 PM

I still get these codes once a month. Then just goes away. Changed sensors about 2yrs ago. Maybe JB4 software related....

06-30-2018, 03:12 PM	#23
Bimmer_Engineer Lieutenant Colonel 1049 Rep 1,667 Posts Drives: 2007 335i Join Date: May 2018 Location: Louisiana iTrader: (0) Garage List 2008 Porsche Boxster [0.00] 2016 Mercedes Benz ... [0.00] 2007 BMW 335i [9.50]	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...
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07-12-2018, 10:14 AM	#29
Bimmer_Engineer Lieutenant Colonel 1049 Rep 1,667 Posts Drives: 2007 335i Join Date: May 2018 Location: Louisiana iTrader: (0) Garage List 2008 Porsche Boxster [0.00] 2016 Mercedes Benz ... [0.00] 2007 BMW 335i [9.50]	Just to close this out for now...I cleaned the VANOS and the codes are clear...will update again if they come back...
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07-16-2018, 08:37 PM	#32
Bimmer_Engineer Lieutenant Colonel 1049 Rep 1,667 Posts Drives: 2007 335i Join Date: May 2018 Location: Louisiana iTrader: (0) Garage List 2008 Porsche Boxster [0.00] 2016 Mercedes Benz ... [0.00] 2007 BMW 335i [9.50]	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...
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07-22-2018, 06:22 PM	#34
kenni243 Second Lieutenant 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.
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07-22-2018, 08:11 PM	#35
Bimmer_Engineer Lieutenant Colonel 1049 Rep 1,667 Posts Drives: 2007 335i Join Date: May 2018 Location: Louisiana iTrader: (0) Garage List 2008 Porsche Boxster [0.00] 2016 Mercedes Benz ... [0.00] 2007 BMW 335i [9.50]	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 10:13 PM..
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08-01-2018, 05:54 PM	#39
///Motivated Private First Class 53 Rep 104 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.
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08-01-2018, 08:39 PM	#40
Bimmer_Engineer Lieutenant Colonel 1049 Rep 1,667 Posts Drives: 2007 335i Join Date: May 2018 Location: Louisiana iTrader: (0) Garage List 2008 Porsche Boxster [0.00] 2016 Mercedes Benz ... [0.00] 2007 BMW 335i [9.50]	I cleaned my vanos and I’ve been good for almost a month and about 500 miles...
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08-20-2018, 11:01 AM	#41
qubansailor Lieutenant 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
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08-20-2018, 01:02 PM	#42
Bimmer_Engineer Lieutenant Colonel 1049 Rep 1,667 Posts Drives: 2007 335i Join Date: May 2018 Location: Louisiana iTrader: (0) Garage List 2008 Porsche Boxster [0.00] 2016 Mercedes Benz ... [0.00] 2007 BMW 335i [9.50]	I’m stil good after a vanos cleaning...been about 1.5 months and 1k miles...
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09-07-2018, 01:50 PM	#44
Chrisred Captain 79 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
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