(SkyNexus7 Wrote: I had the same fault codes on a Citroen C5 RHR 2.0 HDI. It was one injector's coil. You have to disconnect one and then try to start the engine. One by one. Do no disconnect them while engine cranking.no disconnected them between cranking ,but with lexia no been able to access live data on sid 803 i cant injector pressures etc . cant seem to find info on resistance for good injectors , or votage for good fuel pressure regulator , fuel is up to injectors . only starts on easy start or brake cleaner . and cuts out as soon as its burnt it off . need wiring diagram for injectors to ecu etc so can trace loom and check for wiring faults .cant see all 4 injectors down at once . need to check for injector pulse voltage)