Brake Sensor problems of the 2015 Chrysler Town & Country

The car has 25,000 miles on it. Starting out from my house down a hill the power steering and brakes were not working as apparently the engine stopped. I restarted and drove about 15 miles and was on I-26 in TN at 65 mph and the engine rpm dropped to 0, power brakes and steering were inoperable but I managed to get onto the shoulder but was in a dangerous spot with traffic speeding by. Car would start but I was afraid to drive it ass it was not safe if it cut out again on the interstate highway. Had it towed. Still not repaired and mechanic said it showed a code of both bank sensors. E has not found the problem as of yet but I understand Chrysler has had issues with engine stoppage. This is dangerous as my wife would not have been able to control the hard steering and brakes and likely would have wrecked.