ABS light came on, with under-hood noise!

[sperry]

Twice now since I did all that cleaning under the hood, I've had my ABS light come on. Both times it's been as I'm pulling into work.

The first time it happened was on Monday (IIRC). The ABS dash light came on so I parked and turned off the car, I heard some buzzing coming from under the hood, so I popped it, and sure enough the ABS control block was purring (even with the engine off and the key out of the switch). I pulled the big old ABS fuse out, and the buzzing stopped. Reinstalling the fuse seemed to reset the ABS and the light didn't come back until today, when the ABS did the exact same thing, and I ended up having to pull and reinstall the fuse again.

I'm wondering if all the water and oil eater from hosing out of the oil in my engine bay may have made the ABS unhappy, or if this is a common issue and someone may know what's going on.