Hi guys, thanks for the input. I'm not happy to call the PCM at all, the last thing I want to do is get it wrong. That's why I've come here for some guidance. I've clearly not done so checks surgested, fairly new to this. Could you please explain what you mean by current and volt drop check? Would I do this at the component? Attached two more captures since the first post, when the engine idles, the FPR current is in the milli amps. The one that shows 4 amps was the worst I saw the vehicle fault, without looking I think it cranked for about 6-8 secs no start and the current increased half way through this. This is the only time I saw the current this high. My thoughts were with fuel pressure and FPR current dropping at the same time, this was the cause of poor starting. As the current drops out, I was looking for a supply or ground fault. As for DTC's, sorry but I carnt be too spacific as I didn't record them, that was a mistake. Initially one for pre heating circuit that was it, them I rechecked when the vehicle left the workshop and found one for FPR and one for fuel pressure, assumed these were set during the 6-8 sec cranking, non start and 4 amp current capture. Sorry I carnt be more specific with DTC no. Thanks for the interest guys, I'm learning from my mistakes, kind regards, Andy.