the problem is it'll only show codes whilst they occur, the ecu has no memory to store the codes........

So you're getting a 1+3 are you???

Phase synch fault........

This is the relationship of the Crank sensor and the phase sensor.
So i'd start by double checking them both.
Make sure they are set up correctly.
Reletive position to each other, Gaps, condition, resistances etc.......