Door open message

Got problems with engine immobilized message,tried entering eak codes etc nothing worked,then noticed when you open rear door and close it you get message on message centre saying RH FRONT DOOR OPEN when the door is closed also noticed interior light constantly on.tested rh front door actuator unit all seems ok other than a resistance of about 5 ohms on door ajar switch when catch open.does anyone know if this resistance would cause this problem.the vehicle has been stood for couple of years and this is a replacement s/h unit original one had resistance of 247 ohms on ajar switch.also would this problem cause me not to be able to put in eak codes or sync. Becm to remove engine immobilize message

Either the door lock micro switch, outstation or the flexible bit of wiring between the door and the A post.