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  DIY - Replacing Camshaft VANOS Solenoid
orionredwing
02-07-2011
This DIY explains how to replace the VANOS Solenoid, with failure commonly detected through the following codes.

2A82 Inlet-Vanos variable cam control test
2A87 Outlet-Vanos variable cam control test
3100 boost-pressure control, deactivation
...
  #176  
By bigdaddycane on 10-29-2013, 01:37 PM
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Take the snorkel off, it's TWO screws and will give you more room to work. Check the links listed/shown above as the solenoids are very similar between the N52 and N54 motors. Yes, compressed air and carb cleaner will get the solenoids cleaned out.
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  #177  
By Black Bimmer on 10-30-2013, 10:36 PM
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Just got limp mode and pulled code 2A87. FYI, looks like California has a 7 year 70,000mi warranty on emissions components. The "VANOS adjustment unit" is specifically called out as being covered in the BMW warranty book. See Pg 42:
http://www.irvinebmw.com/usr/theme/i...es_English.pdf

Will try my luck at the dealer.
Last edited by Black Bimmer; 10-30-2013 at 10:45 PM.
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  #178  
By Dackelone on 11-10-2013, 09:14 AM
Here is a good DIY video on replacing the vanos sensors...

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  #179  
By bimmertt on 01-24-2014, 11:26 PM
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Well, I just did what I thought would be the inevitable and I dropped the hex bolt for the upper solenoid. On the n52 z4, you are essentially working blind in getting the bolt out/back in.

Will I experience any problems while driving? The solenoid seems pretty snug.

Now to determine if it is worth getting the car in the air to remove the undercover and hunt for the bolt (didn't hear it drop) or just find a dealership that carries it...
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  #180  
By bigdaddycane on 01-25-2014, 12:33 AM
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get the new bolt at the least. Id jack up the front and pull the under panel off or get a good light and make sure its not sitting on a pulley or drive belt.
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  #181  
By ska///235i on 01-25-2014, 11:56 AM
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Use a magnetic pickup stick and search around....i wouldnt drive it without the solenoid bolted on
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  #182  
By ice_nyne on 01-30-2014, 03:47 PM
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Gonna attempt it this weekend. I am getting codes pointing to either the Vanos Solenoid of the Eccentric Sensor. I'll try a heavy cleaning of the solenoids and change the coils while I'm in there, see what happens.

Appreciate the write-up!
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  #183  
By ska///235i on 01-30-2014, 08:41 PM
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Quote:
Originally Posted by ice_nyne
Gonna attempt it this weekend. I am getting codes pointing to either the Vanos Solenoid of the Eccentric Sensor. I'll try a heavy cleaning of the solenoids and change the coils while I'm in there, see what happens.

Appreciate the write-up!
Change the spark plugs too
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  #184  
By ice_nyne on 02-02-2014, 11:52 PM
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Quote:
Originally Posted by ska325xi View Post
Change the spark plugs too
Did that a few weeks back along with an oil change.

Finished the solenoid cleaning earlier today and swapped the intake and exhaust locations as suggested. Very easy to do. Thanks for the write up.
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  #185  
By wanna325i on 02-06-2014, 04:05 PM
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Swap them and clean them. Still getting the same P0015 code. After some more time searching, some say replace the Crankshaft Sensor.

What should I do?
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  #186  
By Efthreeoh on 02-08-2014, 02:23 PM
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Quote:
Originally Posted by bimmertt View Post
Well, I just did what I thought would be the inevitable and I dropped the hex bolt for the upper solenoid. On the n52 z4, you are essentially working blind in getting the bolt out/back in.

Will I experience any problems while driving? The solenoid seems pretty snug.

Now to determine if it is worth getting the car in the air to remove the undercover and hunt for the bolt (didn't hear it drop) or just find a dealership that carries it...
Hex bolt M6X12-8.8ZNNIV 2ea. P/N 07119905524 $0.25

Any M6 x 12 bolt would do.
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  #187  
By wanna325i on 03-16-2014, 11:53 AM
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Quote:
Originally Posted by wanna325i View Post
Swap them and clean them. Still getting the same P0015 code. After some more time searching, some say replace the Crankshaft Sensor.

What should I do?
i replace my exhaust camshaft sensor, clean m valves, clean those solenoid again swap them around. still showing 00015 code. Do i have to replace those two solenoid? Plugs??

thanks
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  #188  
By ska///235i on 03-16-2014, 03:55 PM
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Quote:
Originally Posted by wanna325i
Quote:
Originally Posted by wanna325i View Post
Swap them and clean them. Still getting the same P0015 code. After some more time searching, some say replace the Crankshaft Sensor.

What should I do?
i replace my exhaust camshaft sensor, clean m valves, clean those solenoid again swap them around. still showing 00015 code. Do i have to replace those two solenoid? Plugs??

thanks
Whats the 15 code you talk about? Thats too generic
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  #189  
By wanna325i on 03-17-2014, 12:11 AM
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Quote:
Originally Posted by ska325xi View Post
Whats the 15 code you talk about? Thats too generic
It is P0015 code from a OBD2 reader, still waiting on my IPNA from mail.
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  #190  
By ska///235i on 03-17-2014, 07:09 AM
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Quote:
Originally Posted by wanna325i
Quote:
Originally Posted by ska325xi View Post
Whats the 15 code you talk about? Thats too generic
It is P0015 code from a OBD2 reader, still waiting on my IPNA from mail.
Havent follow your post so not sure whats going on with your car...get it scanned
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  #191  
By e91 335i on 04-07-2014, 12:55 AM
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Hi guys, I have had the same solenoid problem. I changed both solenoid and oil. Still, I have these codes present

First I only had 2a87 and I changed the exhaust solenoid. The car worked a while but then the same code started appearing again. I swapped the (new) solenoid to inteke side and bought a new solenoid to the exhaust side. I changed the oil at the same time. Now the car gave 2a82 intake code. After driving a couple of days the 2a87 is present again but not 2a82 wtf!? The code appears almost immediately when I cold start the car. After driving a while, I restart the car and the 2a87 appears only occasionally.

Do you guys thinks it's the bearing ledges or what? The car has high miles (160 000). What is the part number of those ledges? Any change of doing this repair yourself?
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  #192  
By Zero_09 on 04-12-2014, 05:15 PM
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I had these codes before

2A98,1,Crankshaft-inlet camshaft, correlation
2A43,1,Valvetronic, thermal overload protection: warning threshold
2A82,8,VANOS intake

So I decided to do this DIY and swap the intake and exhaust solenoid. It was pretty simple. I didn't have to take anything out as both of the solenoids was accessible to me on my 07 328i.

Started the car and the idle was a bit on the high side at first. It settle down to 600rpm a bit after. Let it run for a bit and shut it off. A few mins later I started it up again and got CEL.

I checked the connectors again and the top intake solenoid was loose so I fixed that. Started it again and got a half engine check list. Turned it off and went to get my cable to see whats up using the BMWLogger.

2A98,1,Crankshaft-inlet camshaft, correlation
2A43,1,Valvetronic, thermal overload protection: warning threshold
2A82,8,VANOS intake

So I cleared the codes and DME with the BMWLogger software. Tried it again and now I got this

2CFB,1,Throttle-valve adaptation value
2D09,4,Throttle valve.

What a mess. Not sure what I did wrong but the car was running fine before but once in a while I get a CEL and the symptoms describe in the OP so I thought I'd tried an easy fix first.

Anyone know what I did wrong here?
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  #193  
By nick380 on 04-21-2014, 05:28 PM
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Just did this last weekend and wow what a difference in acceleration! No more limp mode, no more lights...my baby is all clean now, on the inside and the outside

2007 335i.
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  #194  
By StealthFish on 04-23-2014, 10:12 PM
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Quote:
Originally Posted by Zero_09 View Post
I had these codes before

2A98,1,Crankshaft-inlet camshaft, correlation
2A43,1,Valvetronic, thermal overload protection: warning threshold
2A82,8,VANOS intake

So I decided to do this DIY and swap the intake and exhaust solenoid. It was pretty simple. I didn't have to take anything out as both of the solenoids was accessible to me on my 07 328i.
I have gotten code P2A98 as well as P3100. Code P2A98 is the same as yours and I cannot find many people who have had this code. Can anyone tell me if this will fix the problem? I cannot find anything on code P2A98. I think it can be the crankshaft instead of the camshaft although I would liek it to be the camshaft VANOS as those are easier to get to and replace or clean.

Help, anyone?
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  #195  
By Vishnu on 05-22-2014, 07:25 AM
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I get limp mode sometimes on hard acceleration on the highway... There are no codes that are thrown up.. That I can tell..
If I turn off the car and back on everything is fine..
Is this a solenoid problem?
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  #196  
By lacortedaniel on 05-28-2014, 07:26 AM
I have a cheapo code reader but it read camshaft position sensor, and after reading some more I found this and thought what the hay, replaced both the camshapft position sensors, and both of the vanos sensors, cannot clear the code but the car runs great. Has some rough idle for a few minutes at cold start up though???? 2006 325i . Any ideas as to why I cant clear codes after replacing all those sensors?
D
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  #197  
By Zero_09 on 06-05-2014, 05:42 PM
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It's been almost two months now since I switch the Vanos solenoid and have not had any problems and CEL ever since. Thanks for te DIY. Save me quite a bit of money.. Hopefully it doesn't show up again.
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