Codes 2E0F and 2D43.

[serf27]

My 2011 x5 35i started like normal today.
After a few stops, it didn’t want to start. It sat for 30 min then started again.
These are the 2 codes that pop up.
2E0F: Valvetronic system deactivated.
2D43: Valvetronic system adjustment range, faulty range check.

I tried to calibrate it and I just hear a rapid click, but the scanner says “operation successful.
The codes do not clear at all.
Slight whining noise when I start it and 2 rapid clicks when I turn the engine off.

I’ve read it could be, dirty oil, mhd tune, Valvetronic motor and Valvetronic shaft, or battery.

I’ve had no battery issue. I will measure cca/voltage to verify the battery is good.
I am due for an oil change so I will do an oil flush and change it. I do have an mhd tune, but I’m not sure if that would cause it? I’ve had the time for a couple of years.

Any other info on this before I replace the Valvetronic motor?
Odds of Valvetronic shaft being bad?

Thanks.

[80stech]

When you say "codes don't clear" are you saying they don't go away or you can't clear them with the scanner? AFAIK the Valvetronic calibrates itself everytime you turn the key but I'm only starting to tinker with mine a bit (N52) getting to know how it works.

[andrewwynn]

https://youtube.com/shorts/TxhJKT3ob...vgROBk6SW9y60h

Does the rapid click sound similar to this video?

This video shows wear on the gears but that's not the actual problem in that case. The motor is not strong enough to extend the eccentric half gear all the way and will fail calibration.

In the video the guy replaced the gear/ shaft he just needed to replace the motor that comes with the pinion gear. (Not that it hurt to get a fresh reviving gear on the shaft)

https://youtube.com/shorts/r7EIcau6-...rGPelbHWibIV43

Here's an example of a working motor going through the full range of motion.

[serf27]

Originally Posted by 80stech

When you say "codes don't clear" are you saying they don't go away or you can't clear them with the scanner? AFAIK the Valvetronic calibrates itself everytime you turn the key but I'm only starting to tinker with mine a bit (N52) getting to know how it works.

I can click clear with the ignition on and the codes will not clear. I can hear it trying to calibrate and it sounds normal sometimes and other times it doesn’t.

[serf27]

Originally Posted by andrewwynn

https://youtube.com/shorts/TxhJKT3ob...vgROBk6SW9y60h

Does the rapid click sound similar to this video?

This video shows wear on the gears but that's not the actual problem in that case. The motor is not strong enough to extend the eccentric half gear all the way and will fail calibration.

In the video the guy replaced the gear/ shaft he just needed to replace the motor that comes with the pinion gear. (Not that it hurt to get a fresh reviving gear on the shaft)

https://youtube.com/shorts/r7EIcau6-...rGPelbHWibIV43

Here's an example of a working motor going through the full range of motion.

So the slight wear on the Valvetronic shaft is ok?
I am fine replacing the motor, but seeing any wear on the shaft and having to replace it is worrying me.

My noise is similar to the noise in the video where they have a new motor and shaft installed. It makes a clicking noise right before the shaft fully rotates. Looks like it’s trying to engage and clicks until it fully engages. Thats the only noise. No constant noise. Just TRRRRT for half a second. My noise does not sound like the video where they show the failed motor, where’s its constantly making noise.

Here is a video of my car making the noise. The first clip is when I try to calibrate it. The sound is very faint, I can hear it on my phone with volume up. The second clip is the whining noise which started yesterday, and the 2 clicks after I turn the car off. The 2 clicks after the car is shut off make the same noise as the single click when calibrating.
https://youtube.com/shorts/Hqi6bqJBT...a28Kaj2jK8cht-

I’ve also edited the video you posted to highlight the noise that I hear.
https://youtube.com/shorts/flwhPhVZ2...PGcE5lzeYcK-MO

So I can get away with just a new motor if the gears on the shaft aren’t totally destroyed?

[andrewwynn]

if you notice the video you sent back, the clicking is on the Fixed one, so it is not in the gears that Sound is in the motor. I believe the motor comes with the pinion gear and that should solve your issue.

[serf27]

Originally Posted by andrewwynn

if you notice the video you sent back, the clicking is on the Fixed one, so it is not in the gears that Sound is in the motor. I believe the motor comes with the pinion gear and that should solve your issue.

Yes, the noise is from the motor, but the motor is still spinning trying to spin the shaft/gears. So my motor is to weak to spin the shaft, it tries to and that’s when it makes the noise?

Yes, a new motor comes complete ready to install. I got a new motor today.

So if the shaft has a tiny bit of wear like the one shown in the video, it is still good?

I got a new motor today, if I plug in the new motor to the wire harness and try to calibrate it, will it calibrate or not since the motor pinion gear isn’t driving anything?

I am ordering a new valve cover gasket and new metal plate gaskets that go under the fuel injector housings.
I did not get a chance to change the oil today. I am still holding out that an oil flush and change may clean the oil feed tube to the gears and clear the error.

Thanks.

[andrewwynn]

The oil feed tube is important. If it fails the gears will self destruct quickly.

Dont do an oil flush unless you also plan to drop the oil pan to scrap out the sludge.

(Personal experience)

My understanding fits your description. The Valvetronic calibrates each drive cycle from what I've heard. There's some chance a failed sensor can cause similar errors.

Can't wait to hear feedback that it's on and working!

[serf27]

Originally Posted by andrewwynn

The oil feed tube is important. But if it fails the gears will self destruct quickly.

Dont do an oil flush unless you also plan to drop the oil pan to scrap out the sludge.

(Personal experience)

My understanding fits your description. The Valvetronic calibrates each drive cycle from what I've heard. There's some chance a failed sensor can cause similar errors.

Can't wait to hear feedback that it's on and working!

Hmm, I’ve done oil flushes for the past few years on my n5x motors..

The Valvetronic motor and sensor are in the same unit on an n55.
Since one of the codes is “Valvetronic disabled”, I read the system is in open loop and it is ok to drive the car.
Is this correct?

[andrewwynn]

https://youtu.be/JnlnMFnUYCo?si=dbYBkfOYCpzZqBYR

Bummer I just looked up the procedure and it's under the spark plug/injector wells! That's an all day job. Not terribly difficult but will require one special tool to remove/replace four injectors also a new head cover gasket (what everybody besides BMW calls valve cover gasket).

I just replaced my valve cover it's a job. Not difficult just tedious.

Remove the screw holding the AC lines too the bulkhead too get an extra inch to clear the VC.