Same happened to me at around the same mileage .... my own fault ... was one night that I did about 4 or 5 shut downs and start ups in short succession ... CEL came on while I was driving home and next day it cleared itself ...
Brought it to the dealer and the code had to do with a low voltage issue ... which made perfect sense
Not sure if your issue is similar but thats my story ...
Bring it in as it is still under warranty ... Good luck !