Is "engine malfunction" the same as...

Bimmer_Engineer · 07-07-2018, 08:21 AM

For the second time in a few weeks my dash has flashed "engine malfunction - reduced power" yada yada yada...is this the same as limp mode?

vb7200 · 07-07-2018, 09:29 AM

I get this too every once in a while. In short, yes it's limp mode. There's different limp modes you can have, depending on what's triggering the light. When mine comes on, I feel pretty much no difference. My buddy who has a 328 had his come on once and it wouldn't let him go over 30 MPH.

Did you run the codes to see what it's coming on?

Bimmer_Engineer · 07-07-2018, 09:41 AM

Yes...2e68: knock sensor and 3100: boost pressure deactivation. I've read a little about these and the 3100 seems to be caused by the 2e68...but changing the knock sensor doesn't seem to fix it.

I'm thinking of cleaning my maf and then the vanos to see if that fixes it.

vb7200 · 07-07-2018, 10:00 AM

Vanos solenoids going bad can set quite a few things off. One of mine got stuck and I had all kinds of codes. Misfires, cam shaft sensor, VANOS, loss of communication, it was a nightmare.

g22rmr · 07-07-2018, 10:44 AM

I drove my car from 37k miles to 88k miles with bad vanos solenoids triggering the engine malfunction reduced power. Should be the first thing on your list to replace.

Bimmer_Engineer · 07-07-2018, 01:09 PM

Quote:

Originally Posted by g22rmr

I drove my car from 37k miles to 88k miles with bad vanos solenoids triggering the engine malfunction reduced power. Should be the first thing on your list to replace.

I cleaned the vanos and the codes went away...so it seems all good...for now...

07-07-2018, 08:21 AM	#1
Bimmer_Engineer Lieutenant Colonel 1051 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]	Is "engine malfunction" the same as... For the second time in a few weeks my dash has flashed "engine malfunction - reduced power" yada yada yada...is this the same as limp mode?
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07-07-2018, 09:29 AM	#2
vb7200 Private First Class 20 Rep 129 Posts Drives: Silver 2007 335xi Join Date: Apr 2017 Location: Utica, New York iTrader: (0) Garage List 2007 BMW 335xi [9.00] 1992 BMW 318i [10.00]	I get this too every once in a while. In short, yes it's limp mode. There's different limp modes you can have, depending on what's triggering the light. When mine comes on, I feel pretty much no difference. My buddy who has a 328 had his come on once and it wouldn't let him go over 30 MPH. Did you run the codes to see what it's coming on? __________________ //2007 335xi // Titansilber Metallic, Black Dakota Leather w/ Nav, Auto, Logic 7 // 1992 318i // Black Exterior, Tan Interior, 5 speed, Aftermarket Radio w/ 2 10" JL w3 v2 subs and Cadence Ultradrive 750W RMS Amp
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07-07-2018, 09:41 AM	#3
Bimmer_Engineer Lieutenant Colonel 1051 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]	Yes...2e68: knock sensor and 3100: boost pressure deactivation. I've read a little about these and the 3100 seems to be caused by the 2e68...but changing the knock sensor doesn't seem to fix it. I'm thinking of cleaning my maf and then the vanos to see if that fixes it.
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07-07-2018, 10:00 AM	#4
vb7200 Private First Class 20 Rep 129 Posts Drives: Silver 2007 335xi Join Date: Apr 2017 Location: Utica, New York iTrader: (0) Garage List 2007 BMW 335xi [9.00] 1992 BMW 318i [10.00]	Vanos solenoids going bad can set quite a few things off. One of mine got stuck and I had all kinds of codes. Misfires, cam shaft sensor, VANOS, loss of communication, it was a nightmare. __________________ //2007 335xi // Titansilber Metallic, Black Dakota Leather w/ Nav, Auto, Logic 7 // 1992 318i // Black Exterior, Tan Interior, 5 speed, Aftermarket Radio w/ 2 10" JL w3 v2 subs and Cadence Ultradrive 750W RMS Amp
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07-07-2018, 10:44 AM	#5
g22rmr Private 17 Rep 50 Posts Drives: e90 Bmw 335i Join Date: Aug 2015 Location: Hallandale Beach iTrader: (0)	I drove my car from 37k miles to 88k miles with bad vanos solenoids triggering the engine malfunction reduced power. Should be the first thing on your list to replace.
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