Hi, welcome to JA.
Rip
Lead Technician
BMW Factory Training, ASE Master Techinician, Advanced engine performance.
This code may not be accompanied by shifting concerns, it may very well be a powertrain module "thinking" there is a concern with the shift solinoid(s)..i've had codes set before for no apparent reason...if you'd like you can clear the code and see if it resets, when, and how long...than you'll know a problem exists and can forward that to the dealer as well.