Shut off at a stop sign, would not start?

Seemed to be running fine. I was driving the car, stopped at a stop light. Car shut off, won't start back. Went to AutoZone. Got a code reader, didn't show any codes. Got the car home, had a mechanic friend come out. Battery was dead, he tried to jump it, wouldn't jump. Said battery was bad. He also got a code for low fuel pressure. He checked, and said fuel was getting to the high-pressure fuel pump, but the spark plugs were dry. Both fuel pumps were recently replaced, so we bought a cheap high pressure fuel pump replacement. He said that was the problem. We have since replaced the high pressure fuel pump and the battery. The car still won't start. Cranks, but won't start.