UKPassats

Been out in the car all day running fine came home switched off left it for a couple of hours went to go back out in it wouldn't turn over engine light on coil light on got the AA to come out stuck it on his machine came up with code P1261 injector 1 problem, now I had all injectors and loom replaced about 2 years ago at VW under warrenty ( pd engine) would this injector fault stop the vehicle from turning over? Where do I stand with them on this?

Any help guys cheers