2014 c250 p0002 code
 

I have a c250 with 44k miles that throws a p0002 code and falls on its face when you go WOT and the car tries to accelerate hard. The high pressure pump shuts off and the rail sits around 52 psi until you cycle the ignition to turn the pump back on. I checked the gas tank for anything obvious but it looked clean and didnt see any debris in the fuel pump bucket. Before i go throw a HPFP at it i wanted to get a second opinion. Thanks in advance.