it can be anything... broken wire, bad sensor, even grease or dirt betveen sensor and sensor wheel can cause it.

Sometimes it ABS lamp lights on when there is high humidity - this may be because of bad isolation.

You need to scan ABS error code, so you know what causing it.

 

Okay, so how do I go about scanning the ABS error code? Is that something I can do myself or need to take it into a shop to have done? Hope these aren't dumb questions, but I'm kind of new to this stuff. Thanks.

 

Go to your local Autozone or about any other mechanic's shop, almost everywhere does it for free now.

 

Thanks guys, I have it checked out and post back here what I find out.