In case anyone is curious, I'm getting Fault 000256, have replaced the sensor with a known good item and the problem persists so i'm thinking a break in the wire somewhere. I've peeled back the outer sheath and checked but there are no obvious signs of damage. All 3 terminals are showing Green (earth/ground) with a power probe when unplugged, wire 2 & 3 are showing green (earth/ground) when plugged in with wire 1 showing nothing.
I'm sure one should be red (live) when plugged in and the ignition on.
Looking to confirm this theory if anyone has a spare few minutes and wouldn't mind checking theirs.