Symtoms will NOT be the same for phase sensor and cps, once running the position read by the phase is locked, it will not be looked for again until after switch off, you can start the car and disconenct the phase sensor and it will make no difference.
If it doesn't find it to start with it will normally go into seriously stupid rich, and would be basically undriveable, suspect it would batch fire with no initial phase sensor.
tabetha