05 Mustang GT With Annoying P0463 Issue

[Machbud]

Hello,
I hope someone can help me solve this annoying P0463 issue I keep having. I have replaced the complete fuel pump & sending unit on the driver's side
and also replaced the separate fuel sending unit on the passenger side, and replaced the fuel pump module just in case. I cleared the code, took her for
a cruise, and got the same P0463 code again, with my fuel gauge back on empty with a full tank of gas WTH? Does anyone have an idea how to resolve
this issue? Please let me know because it's driving me nuts.

Thank You!

 

[Dino Dino Bambino]

That's a head scratcher for sure!
Have you checked in the engine bay for any damaged wiring (by rodents)?

 

[manicmechanic007]

How about go through the pinpoint test steps in the PCED?
Checked the ground in the trunk drivers side?
That P0463 code is either open circuit or bad ground most likely
Check the pins in the fuel pump connector under the rear seat