Sutter/Shut down n Check Engine
 

My 2013 Allroad has an issue. 90% of the time runs fine but once in a while i get a shutter and recently is has shut down. Im able to fire back-up with no issues, but not sure what the problem is. Ive replaced the plugs/all coil packs/Fuel Pressure is great and only happens if vehicle is in drive(not parked and running), any thoughts? My Tech not sure where to go I may need to get a new Tech.

Main switch?