A few months ago my fuel pump went out on my 2006 Explorer. I took on the project of replacing it along with the fuel filter. The project went smooth and nothing broke or was damaged. Within a week the check engine light came on reading a PO451 "Evap Emission System Pressure Sensor Performance". I talked to the guys at Auto zone and they recommended replacing the solenoid which I did and I am still having the code come up after resetting it multiple times. I inspected the lines and they are all in good shape and connected properly. The car performs normally and I have put it off for a few months because dropping the tank is quite a pain in the butt. I notice a particularly strong gas oder while filling the tank which makes me think there is a blockage in the evap lines somewhere. I have dropped the tank now and have not noticed any constraints on the lines. I also inspected the tank for any damage and will be replacing the fuel pump assembly gasket. I am almost certain that the code will re-appear and I want to avoid taking this tank out again so any advise as to what to do is so greatly appreciated. I do not know much about the evap system and am not finding many answers online other than to replace the solenoid. IS it possible that the charcoal canister is clogged? or maybe the sensor is malfunctioning? I was thinking on going to a junk yard and possibly picking up a new tank? Any advise is so greatly appreciated!! Thank you!!