Low mileage 2011 f750 Cummins 6.7

[Skizzlez]

Thanks for the fuel pump read
Wanted to throw another question to the knowledge here.

Got a 3574 code. Low def pressure.
Ran the leak test, and I get over 130psi.
How can that be? Does it take too long to build the pressure? A sensor bad?

Just got tires on it. Gotta start troubleshooting this code.

Will do some reading tomorrow, but thought I'd throw it out there.

Have a good night,
J