Having checked the fuse box diagrams, I can't find anything that refers to an injector relay. The diagrams state that the brown relay in the engine bay relay box is for the headlight washers as evocarlos advised.
its one of the purple relays ""efi relay"" powers all the parts on the engine injectors,fuel vent,egr,lambda heaters the coil pack is fed from the ignition supply the other purple relay is the fuel pump relay
Re-checked to see if the injectors were working with someone cranking the engine for me and there was definitely nothing coming from the injectors.
Sprayed some foam cleaner in through the throttle body whilst cranking and it didn't start. I had previously sprayed some degreaser which sprayed a fine mist rather than a liquid jet through the throttle body it ran very briefly. Didn't know whether that combusted under compression alone.
Based on this, what is the best way to proceed from here?
Cheers for the link mate, I hadn't come across it.
The engine started on the cars existing injector harness and then stalled and wouldn't restart. After testing all the sensors etc. I decided to change the injector harness but I got exactly the same fault code with the new harness.