Had the ABS/DTSC failure come up on my XC60 2014MY.
Plugged in a cheap Topdon diagnostic reader rather than firing VIDA up, and it showed the rear left wheel sensor was faulty.
Decided to view the live data stream for all 4 wheel sensors to make sure it was the issue, and all 4 sensors reported correct wheel speeds, all in sync.
Then all of a sudden, the rear left sensor would randomly drop to 0kph.
Replaced the sensor and the error hasn't returned.
Purchased this ABS sensor:
https://www.eurocarparts.com/p/pagid...nsor-417660598
Was really easy to fit. Wheel of, unplug old sensor and remove torx screw. Remove old sensor, fit new one, screw in torx bolt, plug sensor in, wheel on.