Dodge Repair Questions? Ask a Mechanic for Answers ASAP
Do you have a fuel pressure gauge? If so you need to check for fuel pressure. Do you hear the pump running with key on? The code you gave P0001 is not listed in my code library. However the fuel pressure regulator is serviced with the fuel pump assembly on your truck. So start by checking for fuel pressure, if you don't have a gauge, pull the line off at engine and see if you have any fuel at all.
If I may ask what brand of pump did you install?
If you are doing it yourself and you go to a parts store and they try to sell you an AirTech by no means use it. They are junk, I use Delphi exclusively they build a superior pump that will last.
They love to push those pumps because they make so much off of them.
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Sir thank you so much and please do not hesitate if i can ever help you with any automotive question