Help, on road trip and ABS light came on?

[supermario]

Hello, I'm typing this from my phone and can't use search, so excuse me for not. I was driving and
My ABS light just came on and I don't have a odb reader! My brakes feel fine but is it this a common thing? Any help would be appreciated!

 

[JUST4FUN]

you could find a autozone and have it read

 

[walnuts4x4]

+1 for go to autozone and get it read.... probably the sensor on the top of the rear diff... I think its called the speed sensor... cheap part and 5 min repair