Thanksgiving DURAMAX -BONUS Part 3! (Limp Home P0088)

In the art of diagnostics, when dealing with multiple problems, the question always is "ARE THESE PROBLEMS RELATED"? In Parts 1 and 2 we took care of the malfunctioning PRNDL display, and then a poor battery terminal causing an intermittent no-crank situation. Part 1: https://www.youtube.com/watch?v=_zspEM59sVA Part 2: https://www.youtube.com/watch?v=mTGcxeeqOcQ However, the last customer complaint of a "P0088 - Fuel Pressure Too High -Limp Home" was only reproduced once before the initial repairs. Now that the other issues are sorted out, I want to take a deeper dive on the P0088 and try to recreate the exact conditions for setting the code, with detailed data graphing using the Snap-On Verus. Keep in mind that an aftermarket PPE Lift Pump is installed on this truck: https://www.thoroughbreddiesel.com/113050000/#tab-longdescription The findings are very interesting! Enjoy! Ivan