I've hit a complete dead end here - and hoping someone has either gone this route before, or knows how to go this route.

I parked my car at Heathrow Airport long stay car park, went away for 3 days, and when I arrived back on Sunday midday and climbed into my car I was met with

"Stabilisation program and ABS fault - See owners Manual" followed by "Parking Brake malfunction"

The vehicle was perfectly fine 3 days earlier.

I pulled out my ODBII dongle from glove box, plugged it in and ran the codes quick to find it showed ABS electrical fault - front right wheel, and Speed Sensor Error, signal implausible.

First thought was oh ok, the wheel speed sensor has gone duff.

So I ordered a new one and replaced it a few days later, but the fault still exists, with the same error codes.

It was suggested that maybe the battery was reaching end of life and low voltage was causing gremlins, so had the battery tested and although it was ok, it was low on capacity so I replaced it anyway. This of course did nothing for the issue.

Then the hunt began. I swapped sensors around between left rear and front right, still same fault.

it was suggested that the bearing was the issue, but this has recently been replaced on that side, so I had my reservations, especially since the fault states electrical error in circuit - front right wheel. And even if you reset the faults it instantly returns. This doesnt add up to a wheel bearing issue in my head, I would imagine that it would reset and then flag again once vehicle is rolling and not detecting a wheel speed.

Anyway, I went on the mission of metering out each cable, from the wheels to the ABS control module plug. I got hold of the wiring diagram and sat there measuring the sensor resistance first at the ABS plug and then removing the sensor and buzzing out each wire from ABS plus to wheel sensor plug.

I got 5.5 meg Ohms resistance on all of the wheels except front right which showed open circuit....

I got clean buzzes on front left wheel (by measuring pins 22 and 34 on abs plug and inserting a short on the speed sensor plug)
I got clean buzzes on left rear wheel (by measuring pins 20 and 33 on abs plug and inserting a short on the speed sensor plug)
I got clean buzzes on right rear wheel (by measuring between pins 19 and 31 on abs plug and inserting a short on speed sensor plug)
I got open circuits on both wires on front right wheel (by initially measuring between pins 18 and 32 on abs plug with a short on ABS plug, then by measuring directly between pin 18 and pin1 then pin2 and then measuring directly between pin 32 and pin 1 and then pin 2)

This has me completely flumuxed! As I can't understand how both wires from the Wheel Speed Sensor to the ABS control module would be broken all of a sudden.

I removed the wheel arch liner and traced the wires back until they entered the body work through a grommet and they all looked intact, no signs of abrasion or chewing.
Measuring the wheel speed sensor plug to the wheel arch by piercing the insulation with a pin reveals continuity to that point on both wires. But measuring from that point to the plug reveals open circuit. So somewhere between the wheel arch and the plug the cable seems to have been damage miraculously while vehicle was parked!

Anyone seen this before?
Got any pointers?

Any more so, does anyone know where exactly the wiring harness for the wheel speed sensor runs? Because if i can trace it back to the break I can fix it!