I drive a vectra 06 3.0 V6 CDTI. There is no power from the engine and sticks at around 1300 rpm. The computer fault code is P1216 injection system malfuncation, symptom 50. The local garage protocol is to replace the 2 fuel ECUs and if that does'nt work replace the main ECU. Can't source these parts in any scrap yard. What should I do worried about the cost of getting it fixed?