Hi,can anyone shed any light on this problem.Car cuts out for no reason,and the above fault code P0215 fuel pump relay circuit is present.The fuel pump relay and the fuel cut off switch are built into the fuse box in engine compartment,so I replaced it.I wired up the fuel pump from an external source and it will fill a 5 ltr can in about 40 sec.The fuse box I fitted was a second hand unit,I actually tried 2 just in case but still the same.All connections are good and there's battery voltage at the pump when running.This problem can occur after a mile or so of driving,or it can happen straight away there is no set pattern,and the above fault code comes back straight away.Any help would be much appreciated. Thanks in advance Dominic Casey