Peugeot 508 2.0 HDi DTC P2047 Injector Open Circuit [SOLVED!]

Hello,

I have a Peugeot 508 2.0 HDi with SCR unit.
VIN: VF38EAHXMFL004185

The car was fitted a new ECU and the programming was done by Peugeot.
Only after the new unit, has a fault code P2047 (Injector Open Circuit).
A new Urea injector was fitted and the fault remains.
I haven't tested the wiring, has the problem will only be "mine" on Thursday.
Can someone give some help as to what it may be the fault? Or what to look for?

Thanks.