I have a problem with the code po460, in a 2000 Mercury Mystique L4-122 2.0L DOHC VIN 3 SFI. At this time the fuel pump was replaced because it was no good but the code was stored in the pcm before fixed. After I fixed the problem, I cleared the code. The problem now is that the car is back with the same code again and the fuel pump was bought from the dealer.
I think the problem maybe the fuel pump control module but im not sure because I dont have the voltage references and diagrams for this module. If the module is good, do you know of any other parts that could be causing the same problem? Thank you for your time in reading this e-mail.

Sincerly,
edsalgrami