[MattMcGyver]

Anyone have an update? How did you make out on this?
Have a n55 with only 60,000km throwing similar faults and this same noise. trying to figure out what on earth to do.

[witty]

Originally Posted by MattMcGyver

Anyone have an update? How did you make out on this?
Have a n55 with only 60,000km throwing similar faults and this same noise. trying to figure out what on earth to do.

does it start?

[MattMcGyver]

Yes mine runs OK. Little rough idle. Not quite hitting boost targets. But runs and drives. Only 60,000km on it
.
- DME shows this active code, but no engine light on dash
2DD6 - Valvetronic servomotor, position sensors: Short circuit or line disconnection (line disconnection).


Has this noise when u locking

[witty]

Originally Posted by MattMcGyver

Yes mine runs OK. Little rough idle. Not quite hitting boost targets. But runs and drives. Only 60,000km on it
.
- DME shows this active code, but no engine light on dash
2DD6 - Valvetronic servomotor, position sensors: Short circuit or line disconnection (line disconnection).


Has this noise when u locking

its rather you have a bad servomotor, or some line disconnection, see if your getting power to the Valvetronic, if not find connect it, if its nothing with the connection, the servomotor might be shot and you probably have to buy a new one. Although that's unlikely because that would be another code.

[MattMcGyver]

Originally Posted by sliver 335

its rather you have a bad servomotor, or some line disconnection, see if your getting power to the Valvetronic, if not find connect it, if its nothing with the connection, the servomotor might be shot and you probably have to buy a new one. Although that's unlikely because that would be another code.

How can you test for power to harness/motor? Great suggestion but need to know where and when there's supposed to be power (and what power)

[witty]

Originally Posted by MattMcGyver

How can you test for power to harness/motor? Great suggestion but need to know where and when there's supposed to be power (and what power)

Your servo motor plug should be between your 2nd and 3rd ignition coil. Check where that wire goes, unplug it, and see if it recreates the sound. Note because BMW decided to make everything out of plastic be careful with it because you might break the clips. There's no indefinite way of testing it unless you are good with electronics. Just see if unplugged, the sound still proceeds, and/or a different code pops out.

[MattMcGyver]

Originally Posted by sliver 335

Your servo motor plug should be between your 2nd and 3rd ignition coil. Check where that wire goes, unplug it, and see if it recreates the sound. Note because BMW decided to make everything out of plastic be careful with it because you might break the clips. There's no indefinite way of testing it unless you are good with electronics. Just see if unplugged, the sound still proceeds, and/or a different code pops out.

Already did this thanks. The noise is from the motor so it does in fact go away. Car also will not start with it unplugged and throws an additional, different code.

[witty]

yes it makes sense since when the car is turned off the valvetronic is set to the lowest and won't start. for your car only have 60k km. i doughy it's the valvetronic shaft. Start with a new connector. and see if you can fix it.

[Swag864]

Originally Posted by sliver 335

yes it makes sense since when the car is turned off the valvetronic is set to the lowest and won't start. for your car only have 60k km. i doughy it's the valvetronic shaft. Start with a new connector. and see if you can fix it.

Hey I'm having same issue with my bmw 335 2013 f30 n55...did you ever figure it out sliver 335? I replace my valvetronic servo motor and I tried to relearn with ista but keep getting a error and won't let me finish da relearn process

[more_fasterer]

It's funny how so many weird things can happen to these cars when the battery gets weak...

I had this issue appear the day after fitting a new battery. The old battery had gotten to the point where it needed a jump start a few days prior.

All it took was a relearn in ISTA+ to get the car back to normal. That was 10 days ago, so hopefully it stays that way. The car is high mileage (190km) and old (11yrs) by euro standards so it won't surprise me if the Valvetronic actuator does have issues down the track...