Fuel rail pressure code

[Rawze]

(05-01-2021 )Fred Wrote:  ...
I get a fuel rail pressure code everytime weather drops to 50° or below and engine shuts off. Engine will start again and turn off again. It only does it in cold weather once the weather warms up truck runs good no problem at all engine light turns off.any idea what it might be?

this may or may not be related to the de-mandate or its programming. It could be bad programming .. but it also can be from a failing fuel pump or fuel system.

- When is the last time the barrels and plungers (all the guts) were replaced in the fuel pump? ... when is the last time it was pulled apart and inspected, including pulling out the barrels and inspecting the cam at the bottom?

- Also, Will the engine pass a rail leak-down test?
video: https://odysee.com/@rawze:d/isx-injector...e-cm2250:e