2A87 /3100 cause under boost?

mkiv · 07-09-2010, 02:05 AM

2A87 VANOS exhaust – stiff; jammed mechanically

3100 Boost-pressure control, deactivation – boost-pressure buildup prohibited (N54 only)

will these codes cause boost loss? my buddy's car is having this problem, everytime he go WOT to redline on autotune(6/16) map1, limp mode shows up. but even if the codes not showing up, seems like his car is under-boosted, we have same mode(yes, everything is same). my car will pull him easy. i know the problem is the vanos solenoid, hes getting the car fixed next week, but i just want to know will the solenoid cause the car under boost?

OpenFlash · 07-09-2010, 02:07 AM

Yes, a VANOS solenoid issue will also cause the underboost issue. They almost always go together like peanut butter and jelly. I had a sticky VANOS solenoid at ~40k miles. Fixed under warranty. Still rockin' at 70k miles.

Shiv

mkiv · 07-09-2010, 02:08 AM

Or after he got those codes, procede will switch to valet mode by itself? and the car will be running only 8psi?

mkiv · 07-09-2010, 02:09 AM

Quote:

Originally Posted by shiv@vishnu

Yes, a VANOS solenoid issue will also cause the underboost issue. They almost always go together like peanut butter and jelly. I had a sticky VANOS solenoid at ~40k miles. Fixed under warranty. Still rockin' at 70k miles.

Shiv

wow! thats a fast reply! thanks a lot shiv! thats what i thought

evorobert · 07-24-2010, 05:56 PM

bumping this.

i just got a limp mode with codes 2A87 and 3100. Now that i know what they are...will this cause serious damage if the solenoid is not replaced?

dealership is blaming my mods and will not do anything about it even though there is a bulletin out on it here : http://www.bmwtis.com/tsb/bulletins/...p/B110208g.htm

GarrettF · 07-24-2010, 06:15 PM

solenoid isnt too expensive.... GO DIY if the dealer is giving you a problem...pay to play

OpenFlash · 07-24-2010, 06:17 PM

Definitely a do-able DIY. And no harm comes of driving around with a bad solenoid. But definitely replace it sooner than later so you can start enjoying your car again.

shiv

mkiv · 07-24-2010, 06:30 PM

i guess you can try a different dealer. and build friendship with ur SA. really helps for this VERY unreliable/mod friendly car.

Big Tom · 07-25-2010, 02:12 PM

Quote:

Originally Posted by shiv@vishnu

Yes, a VANOS solenoid issue will also cause the underboost issue. They almost always go together like peanut butter and jelly. I had a sticky VANOS solenoid at ~40k miles. Fixed under warranty. Still rockin' at 70k miles.

Shiv

So the 2A87 could be the cause for getting 30FF codes? (I get them both sometimes)

Has anyone tryed to clean a bad Vanos solenoid with good results?

OpenFlash · 07-25-2010, 02:19 PM

Quote:

Originally Posted by Big Tom

So the 2A87 could be the cause for getting 30FF codes? (I get them both sometimes)

Has anyone tryed to clean a bad Vanos solenoid with good results?

If you see the 2A87 code and a 30FF code at the same time, it's likely just the VANOS solenoid sticking issue which causes an underboost condition.

But if you see 30FF codes by itself, it's likely an underboost condition caused by a tune mapping or an actual boost leak.

Shiv

scottp999 · 07-25-2010, 03:15 PM

Good info - If you have a Bentley Manual it looks like an easy DIY for the solenoids. Might be worth trying to clean with compressed air before buying a new one.

Big Tom · 07-25-2010, 05:28 PM

Quote:

Originally Posted by scottp999

Might be worth trying to clean with compressed air before buying a new one.

Yep, I will try to clean them tomorrow!

gt3fever · 02-15-2011, 12:41 AM

anyone has part number for solenoid ??

orionredwing · 02-15-2011, 01:02 AM

Quote:

Originally Posted by hipertech

anyone has part number for solenoid ??

Here you go. Here's a link to my DIY w/ p/n and everything.

http://www.e90post.com/forums/showthread.php?t=486201

gt3fever · 02-15-2011, 01:57 AM

Quote:

Originally Posted by orionredwing

Here you go. Here's a link to my DIY w/ p/n and everything.

http://www.e90post.com/forums/showthread.php?t=486201

thx !!

**335i** · 02-17-2011, 07:59 AM

Quote:

Originally Posted by shiv@vishnu

If you see the 2A87 code and a 30FF code at the same time, it's likely just the VANOS solenoid sticking issue which causes an underboost condition.

But if you see 30FF codes by itself, it's likely an underboost condition caused by a tune mapping or an actual boost leak.

Shiv

what can cause boost leak? bad connecting pipes to fmic or bov?

BIGBOYQ · 07-09-2012, 03:52 PM

Hi,

I have this issue a couple of times, using my JB4 both on Map 1 and Map 5.

However I have been unable to replicate the issue using Map 4 (stock).

Going to do more testing, as if I can replicate the problem I might take it back under warranty.

Or may even try and clean them first, however one garage has quoted me £200 and to do an oil change? WHY

BBQ

JamesM3M5 · 07-09-2012, 04:20 PM

They're right on the front of the engine and a VERY easy DIY if you have a 5mm allen-wrench. Clean out with carb and choke cleaner (removes oil and gunk better than brake clean) then brake clean (removes residues). Reinstall with a light coat of oil on the o-ring. Not worth your time to drive to a shop when it's that easy. Best to do with a cold engine so the parts aren't so hot.

BIGBOYQ · 07-09-2012, 05:17 PM

Well i think that is the plan, i have a go week after next.

Fred_Boosted · 07-09-2012, 07:03 PM

3100 is code for limp mode. No need to worry that code

dnathan630 · 11-29-2020, 10:02 PM

I am having the same problems. So lost

07-09-2010, 02:05 AM	#1
mkiv 2JZ 64 Rep 819 Posts Drives: 16 G500 Join Date: Nov 2008 Location: 温哥华Vancouver iTrader: (6)	2A87 /3100 cause under boost? 2A87 VANOS exhaust – stiff; jammed mechanically 3100 Boost-pressure control, deactivation – boost-pressure buildup prohibited (N54 only) will these codes cause boost loss? my buddy's car is having this problem, everytime he go WOT to redline on autotune(6/16) map1, limp mode shows up. but even if the codes not showing up, seems like his car is under-boosted, we have same mode(yes, everything is same). my car will pull him easy. i know the problem is the vanos solenoid, hes getting the car fixed next week, but i just want to know will the solenoid cause the car under boost? __________________ E92 335i Fully Loaded \| Procede Rev2 \| ETS FMIC \| AR Catless DP \| AFE DCI \| AA BOV \| KW V2 \| iForged Essen \| VRS CF Trunk \| M-Tech Sideskirts \| M-Tech Rear \| Ericsson Front GONE!
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07-09-2010, 02:07 AM	#2
OpenFlash 1806 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	Yes, a VANOS solenoid issue will also cause the underboost issue. They almost always go together like peanut butter and jelly. I had a sticky VANOS solenoid at ~40k miles. Fixed under warranty. Still rockin' at 70k miles. Shiv
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07-09-2010, 02:08 AM	#3
mkiv 2JZ 64 Rep 819 Posts Drives: 16 G500 Join Date: Nov 2008 Location: 温哥华Vancouver iTrader: (6)	Or after he got those codes, procede will switch to valet mode by itself? and the car will be running only 8psi? __________________ E92 335i Fully Loaded \| Procede Rev2 \| ETS FMIC \| AR Catless DP \| AFE DCI \| AA BOV \| KW V2 \| iForged Essen \| VRS CF Trunk \| M-Tech Sideskirts \| M-Tech Rear \| Ericsson Front GONE!
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07-24-2010, 05:56 PM	#5
evorobert Private 0 Rep 98 Posts Drives: 08 335i coupe Join Date: Dec 2007 Location: So Cal iTrader: (2)	bumping this. i just got a limp mode with codes 2A87 and 3100. Now that i know what they are...will this cause serious damage if the solenoid is not replaced? dealership is blaming my mods and will not do anything about it even though there is a bulletin out on it here : http://www.bmwtis.com/tsb/bulletins/...p/B110208g.htm __________________ *2008 E92 6MT, Montego Blue*
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07-24-2010, 06:15 PM	#6
GarrettF Former E46Fanatic 13 Rep 284 Posts Drives: 1987 S52 325is Join Date: Nov 2007 Location: NYC iTrader: (3)	solenoid isnt too expensive.... GO DIY if the dealer is giving you a problem...pay to play
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07-24-2010, 06:17 PM	#7
OpenFlash 1806 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	Definitely a do-able DIY. And no harm comes of driving around with a bad solenoid. But definitely replace it sooner than later so you can start enjoying your car again. shiv
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07-24-2010, 06:30 PM	#8
mkiv 2JZ 64 Rep 819 Posts Drives: 16 G500 Join Date: Nov 2008 Location: 温哥华Vancouver iTrader: (6)	i guess you can try a different dealer. and build friendship with ur SA. really helps for this VERY unreliable/mod friendly car. __________________ E92 335i Fully Loaded \| Procede Rev2 \| ETS FMIC \| AR Catless DP \| AFE DCI \| AA BOV \| KW V2 \| iForged Essen \| VRS CF Trunk \| M-Tech Sideskirts \| M-Tech Rear \| Ericsson Front GONE!
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07-25-2010, 03:15 PM	#11
scottp999 Brigadier General 136 Rep 4,764 Posts Drives: 4runner SR5 Join Date: Mar 2007 Location: MD iTrader: (2) Garage List 2007 BMW 335 [9.00]	Good info - If you have a Bentley Manual it looks like an easy DIY for the solenoids. Might be worth trying to clean with compressed air before buying a new one.
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02-15-2011, 12:41 AM	#13
gt3fever Major 78 Rep 1,232 Posts Drives: 992 GT3, G87 Join Date: Oct 2008 Location: Socal, Taiwan iTrader: (15)	anyone has part number for solenoid ??
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07-09-2012, 03:52 PM	#17
BIGBOYQ Private First Class 38 Rep 193 Posts Drives: Z4 28i Join Date: Nov 2011 Location: England iTrader: (0)	2a87 and JB4 Hi, I have this issue a couple of times, using my JB4 both on Map 1 and Map 5. However I have been unable to replicate the issue using Map 4 (stock). Going to do more testing, as if I can replicate the problem I might take it back under warranty. Or may even try and clean them first, however one garage has quoted me £200 and to do an oil change? WHY BBQ
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07-09-2012, 04:20 PM	#18
JamesM3M5 Some dude 92 Rep 1,780 Posts Drives: E92 335i Join Date: Sep 2011 Location: Northern VA iTrader: (0)	They're right on the front of the engine and a VERY easy DIY if you have a 5mm allen-wrench. Clean out with carb and choke cleaner (removes oil and gunk better than brake clean) then brake clean (removes residues). Reinstall with a light coat of oil on the o-ring. Not worth your time to drive to a shop when it's that easy. Best to do with a cold engine so the parts aren't so hot. __________________ RRT E92 335i/6MT with stuff and things
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07-09-2012, 05:17 PM	#19
BIGBOYQ Private First Class 38 Rep 193 Posts Drives: Z4 28i Join Date: Nov 2011 Location: England iTrader: (0)	Well i think that is the plan, i have a go week after next.
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07-09-2012, 07:03 PM	#20
Fred_Boosted Captain 91 Rep 632 Posts Drives: 335i Join Date: Nov 2011 Location: USA iTrader: (1) Garage List 2010 BMW 335i [8.00]	3100 is code for limp mode. No need to worry that code
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11-29-2020, 10:02 PM	#21
dnathan630 Registered 0 Rep 1 Posts Drives: Bmw 135i Join Date: Nov 2020 Location: Arizona iTrader: (0)	I am having the same problems. So lost
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