my dd cavalier has ABS which I hate for the record.
Anyway it has an intermittent ABS light.. It doesnt come on all the time or at a certain time but if you drive it long enough it will eventually come on..
The code it is throwing is the LF Wheel speed sensor-excessive variation.
Now would this be the actual abs sensor on the Left wheel or would it be caused by a possible faualty Right sensor... As the left spins there is no signal from the right which would cause excessive variation..
It started happening after my g/f washed mud out of the wheel wells with a pressure washer..
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i have the same problem just restart the car. nothing serious or damageing. if their might be water in their unplug it on a hot day for an hour make sure you have some plug boot goo and use that to keep out the water .. normall y happens to me going round a corner like an off ramp.