Vanos selonoid help!

NOM3ERY · 05-14-2013, 11:06 AM

So i been getting a code at wot once in a while for the past week 2a78 for jammed exhaust vanos selonoid followed by 3100 a limp mode code. My question is i been doing research how many of you guys cleaned the sensors and were fine vs replacing them. Also is the the reason that this code is being thrown for the sensor? Thanks any help is appreciated

NOM3ERY · 05-14-2013, 01:10 PM

Bump anyone

blacknbean · 05-14-2013, 02:16 PM

dealer cleaned and swapped mine and 1 month later the codes came back. they finally replaced and its been a few months and it hasnt come back.

SalemChiro · 05-14-2013, 03:41 PM

I had the same issue at 27000 miles. I cleaned and swapped them along with an oil change and it's been fine so.

joec500 · 05-14-2013, 03:44 PM

it's a super Easy DIY, I would recommend just replacing them. I find once they start throwing codes, even after cleaning they return.

raceyBMW · 05-14-2013, 04:11 PM

Clean them and reinstall...you can swap if you want, or just see if the code goes away. If it comes back, try swapping and see if the code follows the solenoid to the intake side. Then you know you need to replace that solenoid.

If you are still getting a code on the exhaust side after cleaning and swapping, then its most likely another issue (probably bearing ledges, though not sure they were an issue on the M3?)

NOM3ERY · 05-14-2013, 04:54 PM

Thanks for the advice guys! And sorry this is my bros account he has a m3 i have a 07 e92 335i

WickedB · 05-14-2013, 05:43 PM

I just cleaned mine / swapped their positions as someone recommended on here (they're the same).. and so far no codes for about 6-7 months..

NOM3ERY · 05-15-2013, 08:34 AM

Hey what are you guys cleaning the solenoids with?

daMau · 05-15-2013, 08:57 AM

Quote:

Originally Posted by NOM3ERY

Hey what are you guys cleaning the solenoids with?

I cleaned mine with some high pressure air, and changed the oil. No recurrences since, very simple.

Indo Rider · 05-15-2013, 09:16 AM

Clean and swap didn't help me at all. Still was getting codes mostly on exhaust side. Replaced both solenoids and no codes for about 20k miles.

ozzy1 · 05-15-2013, 09:23 AM

Quote:

Originally Posted by joec500

it's a super Easy DIY, I would recommend just replacing them. I find once they start throwing codes, even after cleaning they return.

^ this and my mpg improved right away after the replacement.

NOM3ERY · 05-15-2013, 10:03 AM

Ok so then i think im better off replacing them because i rather just avoid this issue from coming back

raceyBMW · 05-15-2013, 10:43 AM

You can also get an electric parts cleaner spray (Lectra-Motive) at any parts store.

fooledyas · 01-31-2014, 08:46 PM

I got the same code 2A78 I could not find it on any trouble code list. Where did you find it ?

Brule · 01-31-2014, 11:07 PM

I got these codes and replaced solonoids( as well as coils and spark plugs) and car still went into limp mode. it was a boost leak under inlet manifold. fixed it

05-14-2013, 11:06 AM	#1
NOM3ERY Banned 32 Rep 487 Posts Drives: E92 M3 Join Date: Mar 2011 Location: bronx,ny iTrader: (5)	Vanos selonoid help! So i been getting a code at wot once in a while for the past week 2a78 for jammed exhaust vanos selonoid followed by 3100 a limp mode code. My question is i been doing research how many of you guys cleaned the sensors and were fine vs replacing them. Also is the the reason that this code is being thrown for the sensor? Thanks any help is appreciated Last edited by NOM3ERY; 05-14-2013 at 11:13 AM..
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05-14-2013, 01:10 PM	#2
NOM3ERY Banned 32 Rep 487 Posts Drives: E92 M3 Join Date: Mar 2011 Location: bronx,ny iTrader: (5)	Bump anyone
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05-14-2013, 02:16 PM	#3
blacknbean Major 14 Rep 1,044 Posts Drives: e92 335i 6MT Join Date: Jul 2007 Location: LA iTrader: (2)	dealer cleaned and swapped mine and 1 month later the codes came back. they finally replaced and its been a few months and it hasnt come back.
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05-14-2013, 03:41 PM	#4
SalemChiro Second Lieutenant 9 Rep 268 Posts Drives: 135i vert Join Date: May 2012 Location: MA iTrader: (0)	I had the same issue at 27000 miles. I cleaned and swapped them along with an oil change and it's been fine so.
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05-14-2013, 03:44 PM	#5
joec500 Brigadier General 136 Rep 3,052 Posts Drives: it has 4 wheels Join Date: Jul 2008 Location: Los Angeles iTrader: (12)	it's a super Easy DIY, I would recommend just replacing them. I find once they start throwing codes, even after cleaning they return. __________________ 2007 E92 6MT SGM: MusicarNW Level 2, Procede Rev 2.5, FFTEC/Vishnu LPFP with Flexfuel Sensor and Flash, M3 Offset V701's, WaveTrac LSD, Michelin PSS, Downpipes, M3 Control Arms, TCKline D/A Suspension, LCI Tail lights, Lux AE's, ER Charge Pipe, DCI's, Mtech Front and Rear, M3 Sideskirts, HPF Stage 1 Clutch
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05-14-2013, 04:11 PM	#6
raceyBMW king of the hills 112 Rep 2,923 Posts Drives: 2011 M3 w/ESS55, 2001 540i/6 Join Date: Dec 2006 Location: Arvada, CO iTrader: (1) Garage List 2001 BMW 540i/6 [8.17] 1994 530i [9.00] 2007 335i Coupe [8.37]	Clean them and reinstall...you can swap if you want, or just see if the code goes away. If it comes back, try swapping and see if the code follows the solenoid to the intake side. Then you know you need to replace that solenoid. If you are still getting a code on the exhaust side after cleaning and swapping, then its most likely another issue (probably bearing ledges, though not sure they were an issue on the M3?)
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05-14-2013, 04:54 PM	#7
NOM3ERY Banned 32 Rep 487 Posts Drives: E92 M3 Join Date: Mar 2011 Location: bronx,ny iTrader: (5)	Thanks for the advice guys! And sorry this is my bros account he has a m3 i have a 07 e92 335i
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05-14-2013, 05:43 PM	#8
WickedB Second Lieutenant 17 Rep 290 Posts Drives: 2007 335i Convertible Join Date: Mar 2012 Location: Detroit, MI iTrader: (0)	I just cleaned mine / swapped their positions as someone recommended on here (they're the same).. and so far no codes for about 6-7 months..
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05-15-2013, 08:34 AM	#9
NOM3ERY Banned 32 Rep 487 Posts Drives: E92 M3 Join Date: Mar 2011 Location: bronx,ny iTrader: (5)	Hey what are you guys cleaning the solenoids with?
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05-15-2013, 09:16 AM	#11
Indo Rider Captain 634 Rep 788 Posts Drives: 135 Join Date: Apr 2012 Location: United States iTrader: (0)	Clean and swap didn't help me at all. Still was getting codes mostly on exhaust side. Replaced both solenoids and no codes for about 20k miles.
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05-15-2013, 10:03 AM	#13
NOM3ERY Banned 32 Rep 487 Posts Drives: E92 M3 Join Date: Mar 2011 Location: bronx,ny iTrader: (5)	Ok so then i think im better off replacing them because i rather just avoid this issue from coming back
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05-15-2013, 10:43 AM	#14
raceyBMW king of the hills 112 Rep 2,923 Posts Drives: 2011 M3 w/ESS55, 2001 540i/6 Join Date: Dec 2006 Location: Arvada, CO iTrader: (1) Garage List 2001 BMW 540i/6 [8.17] 1994 530i [9.00] 2007 335i Coupe [8.37]	You can also get an electric parts cleaner spray (Lectra-Motive) at any parts store.
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01-31-2014, 08:46 PM	#15
fooledyas Private First Class 12 Rep 162 Posts Drives: 2011 z4 and 328i Join Date: Apr 2012 Location: 1175 iTrader: (0)	I got the same code 2A78 I could not find it on any trouble code list. Where did you find it ?
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01-31-2014, 11:07 PM	#16
Brule Brigadier General 846 Rep 3,190 Posts Drives: 2007 335i e92 6spd man Join Date: Jul 2013 Location: Darwin iTrader: (0)	I got these codes and replaced solonoids( as well as coils and spark plugs) and car still went into limp mode. it was a boost leak under inlet manifold. fixed it
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