I drive the wagon all day pulled trailers no issue running better than thought. Parked is slight ditch, came back rear lumpy chugging wouldn’t rev up. I thought dirty diesel filter changed it. Then it wouldn’t start l, check fuel from and to pump all running. 2 fault codes 14 timing control system malfunction and 15 throttle motor circuit. What are everyone’s thoughts, either pump, sensor or something electrical, all help is appreciated.