ok so ive had someone come to me with a transit 2.4 camper.

Vehicle 2.4 camper
Automatic transmission
2005 model

know work carried out
fuel pump replacement

story
the vehicle has had a fuel pump replacermnt fitted from a manual model, the ecu was changed from a automatic (origional) to a manual. they have coded they key by the look of things as the immobiliser light does not flash but the vehicle starts runs for 10 seconds and dies.

fuel pump has been coded successfully but vehicle will not stay running.

obd codes
U1900 (CAN COMMUNICATION BUS FAULT -RECEIVE ERROR)
P0606 (ECU PROCESSOR FAULT)
P0933 HYDROLIC PRESSURE RANGE OR PERFORMANCE)
P0900 (CLUTCH ACTUATOR CIRCUIT OPEN)
P0910 (GATE SELECTOR ACTUATOR CIRCUIT OPEN)

its a nice sticky mess

suggestions please and thank you in advance