I'm an old school mechanic, turned electrician, turned certified 3G welder, turned farmer. With that said, take this with a grain of salt...I would blame the electric side for problems. That would include software.Long start happened 4 times, 2 times after driving several hundred miles stopped shut off engine then went to restart and it just continually cranks without firing. Luckily on the second attempt it did fire each time. The second two times truck had not run for over 8 hours tried to start and same long crank, waited a few seconds and then tried it fired up. Problem with the mechanics? Fuel system? Electrical?
That is if you hear the fuel pump pressurize...that strange noise you hear under feet, when you open the door. At the pressure the 3.0 runs at, there isn't enough time to build 3 hundred bilgion psi when you hit the start button. I have not heard one failure to start on the second attempt, which would say the fuel pump pressurized.
I know it's awfully hard to hear noises after you get accustom to them. I don't hear the fuel pump nor the turbo actuator after shutdown any longer. It would be interesting if ones that are showing this error, could train their ear to make a observation if they hear the pump every time the door opens.