TD4 non start

2001 TD4 won't start.

Was running fine switched off one night and won't start the next day.

Has the code 1260 fuel pressure - have got some live data and although there is low pressure (confirmed pump is running and fuel getting to engine) the high pressure remains firmly on zero. Even cranking with easy start engine will fire and run on easy start but there is no high pressure fuel reading. Engine stops when easy start is stopped.

I have checked, cleaned and reconnected the plug on the rail sensor switch, seems ok. Any suggestions on what else I can try before parts need replaced?

Doubt it's the injector leak back test, more like it's not switching on

Thanks again

could be the fuel pump or fuel rail pressure sensor connection

Exactly what mine did with a faulty injector, I got the same low pressure reading.....leak back test confirmed fecked injector.