Fault code po252 for fiat doblo?

[preston]

Hi, i've got a fiat doblo cargo 1.9d, tries to start even fires up for a second or two the cuts out, fault code are po252, po253, po254 all relating to rotor position sensor... auto data suggests wiring fault on the pump ecm, has anyone come across this b4?? is it a replacement pump or is there a fix for the fault??

Thanks in advance