vehicle stalls while driving; I stop and shut it down, and then it seems fine. on 2010 Ford Escape Hybrid

Before this happens, the truck bucks once as if it is going into low gear or something. Idles rough. This happened 4 times today while driving. Happens anywhere at any time, and just started about 2 weeks ago. I thought it could be ERG valve, or dirty filter, but I dont think so. My brother-in-law put it on a scanner,and no codes came up. When it happens, a small yellow light in shape of a socket wrench shows up.

need to get this to a dealership. have a service bulletin 11-11-8 that may concern this problem. need to have codes run to see if this is related to your concern.