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      02-08-2023, 12:25 AM   #1
Coltone92
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VANOS issue?

Hello everyone,

Got a service engine light, protool scan showed ” VANOS valve, exhaust, bank 2, activation” fault 2766. When plugged into a generic obd 2 I get code P0023 “B camshaft position actuator circuit/open bank 2”

Just curious if anyone has experience with these codes and can shed some light.

I’ve already checked camshaft position sensors and they all seem to be connected fine. Also swapped my bank 1 and bank 2 exhaust Vanos solenoid valves in hopes of diagnosing a faulty solenoid, however, even when “affected” solenoid is swapped to bank 1, fault still shows on bank 2. Should I just replace both exhaust solenoids?
I notice no real performance difference, car idles fine and accelerates normally.

Any direction is greatly appreciated!
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      03-02-2026, 10:59 PM   #2
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Did you manage to sort this problem out? I am having the same issue and can barely find any information on this.
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      03-02-2026, 11:12 PM   #3
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Circuit open means the selonoid is busted or you have a loose/broken wire. Being that you swapped them and the issue stayed at the same bank tells you it?s probably the wire or connector or pin in the connector.
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Last edited by Scrippy; 03-02-2026 at 11:13 PM..
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      03-03-2026, 04:46 AM   #4
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Quote:
Originally Posted by Scrippy View Post
Circuit open means the selonoid is busted or you have a loose/broken wire. Being that you swapped them and the issue stayed at the same bank tells you it?s probably the wire or connector or pin in the connector.
Thanks! I will test the connectors and see if there lies the problem. Where is the exhaust Vanos Solenoid located on the S65?
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      03-03-2026, 07:52 AM   #5
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Quote:
Originally Posted by inoizink View Post
Thanks! I will test the connectors and see if there lies the problem. Where is the exhaust Vanos Solenoid located on the S65?
Front of the heads (facing the front of the car). It is plugged into a connector

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      03-03-2026, 10:08 AM   #6
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Quote:
Originally Posted by inoizink View Post
Did you manage to sort this problem out? I am having the same issue and can barely find any information on this.
Quote:
Originally Posted by inoizink View Post
Thanks! I will test the connectors and see if there lies the problem. Where is the exhaust Vanos Solenoid located on the S65?
If you swapped sides, shouldn't you know where it is?
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      03-03-2026, 10:15 AM   #7
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Quote:
Originally Posted by Brandoch View Post
If you swapped sides, shouldn't you know where it is?
He did not post the original thread. He jumped in and said he is having similar VANOS issues
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      03-03-2026, 11:01 AM   #8
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Quote:
Originally Posted by zstone View Post
He did not post the original thread. He jumped in and said he is having similar VANOS issues
I understand that. He said he had the exact problem, which would include swapping sides.
There is a huge amount of bots on this site right now, acting as humans. They are even PMing the admin and whining at them. Im just trying to make sure that we are talking to a human and not a bot.
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      03-03-2026, 07:52 PM   #9
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Quote:
Originally Posted by Brandoch View Post
I understand that. He said he had the exact problem, which would include swapping sides.
There is a huge amount of bots on this site right now, acting as humans. They are even PMing the admin and whining at them. Im just trying to make sure that we are talking to a human and not a bot.
Damn man, chill out.
I'm not a bot, and no I haven't swapped sides yet.
I am having the same generic P0023 code as the person who posted the thread first.
(Haven't had time to work on it yet) I wanted more information before I started chasing problems blindly.
Thanks for the information anyways.

Last edited by inoizink; 03-03-2026 at 07:58 PM..
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      03-03-2026, 11:52 PM   #10
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Quote:
Originally Posted by inoizink View Post
Damn man, chill out.
I'm not a bot, and no I haven't swapped sides yet.
I am having the same generic P0023 code as the person who posted the thread first.
(Haven't had time to work on it yet) I wanted more information before I started chasing problems blindly.
Thanks for the information anyways.
I was not trying to offend.
What I said was true, I'm trying to find a pattern on bots. It has been common in the past that a bot would ask a similar question. This forum has been absolutely bombarded with bots and scammers. Quite a few members have lost hundreds of dollars each in scams.

I apologize for the accusation.
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      03-04-2026, 02:49 PM   #11
inoizink
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Quote:
Originally Posted by Brandoch View Post
I was not trying to offend.
What I said was true, I'm trying to find a pattern on bots. It has been common in the past that a bot would ask a similar question. This forum has been absolutely bombarded with bots and scammers. Quite a few members have lost hundreds of dollars each in scams.

I apologize for the accusation.
I get it, bots are super annoying.
No worries, thanks for the help. I’m gonna take a look today and swap sides to see if that changes anything when I scan it.
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      03-04-2026, 03:00 PM   #12
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Quote:
Originally Posted by inoizink View Post
I get it, bots are super annoying.
No worries, thanks for the help. I’m gonna take a look today and swap sides to see if that changes anything when I scan it.
When you take them out to swap sides, I would clean them well, with break or carb cleaner.
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      03-05-2026, 08:15 PM   #13
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Quote:
Originally Posted by zstone View Post
When you take them out to swap sides, I would clean them well, with break or carb cleaner.
I cleaned both of them, swapped them and it was still reading Bank 2.
I started going over the connectors and realized that under the plenum where the other side of the connector is, one of the little wires to it was broken!
I was able to fix it easily and put everything back together, everything's working perfect now!
Thanks guys for the support and information.
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      03-06-2026, 03:55 PM   #14
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cleaning the vanos solenoid is a waste of time. Just replace them if you think they are faulty.

ISTA testing will tell you if its out of whack also.
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