dreaded golf mk5 abs/traction light

[gary3170]

hi all, was hoping someone could help me out
wifes car abs/traction light came up fault on diaganose left rear sensor.....ok
changed it light went off .........for 20 seconds :-(
back on computer now 2 faults mechanical fault?
00285 - ABS Wheel Speed Sensor Rear Left (G46): Mechanical Malfunction
Possible Causes
Excessive Air Gap between ABS Wheel Speed Sensor Rear Left (G46) and Rotor..........does the sensor read onto the wheelbearing?i.e faulty wheelbearing
Short Circuit in Wiring from/to ABS Wheel Speed Sensor Rear Left (G46).....could be wiring best way to check
ABS Wheel Speed Sensor Rear Left (G46) faulty...............ruled out?its brand new
any answers mucho appreciated
kind regards still scratching head!gary

[jetbox]

The hub/wheel bearing has a toothed rotor which the sensor picks up on. The toothed rotor corrodes which causes the error.....

[RadoVR6]

jetbox said:

The hub/wheel bearing has a toothed rotor which the sensor picks up on. The toothed rotor corrodes which causes the error.....

This. I had rear left go aswell. Need a new hub/bearing.

[gary3170]

cheers lads changing the bearing tomorrow i,ll let you know how it goes
theres 2 different sizes 30mm /32 mm my kind motor factor local chap is letting me take both and give the wrong one back cant find anywhere online /vw dealership didnt know if it was 30/32 mm bad info i.m.h.o
thanks for the replies lads much appreciated