"Intermittent Fault. Cylinder reference sensor. Consistency when stopped."

[JamesG]

I've had a look at the loom and it seems fine to me but I suppose it could be knackered somewhere down the line wonder whether its worth stripping it out and taking a closer look when I replaced the crankshaft sensor the plug didn't have the bit that locks onto the sensor so had to use a cable tie but I can't see that being the problem?

Any other advice would be great as I thought I had cured this along time ago