Cmpbeachbum

Just drove 2009 certified off the lot. Rough idle after driving 40 min. Stalled 4 times, once while proceeding from stop, other 3 while in park. Let engine cool, could not reproduce. Drove 30 min and then 2 stalls from park, but rough idle while stop start driving. Rpms inconsistent, Rmps keep dropping below 400 while idling at light or stop sign, jumps up to 1100' back down 400 then stall. Yellow wrench display after stall. Afraid to drive. How can this be resolved?