Altima 94 - ABS light

Hi,
Can someone please help. I recently bought a 94 Altima GXE but the ABS light remains ON, the brakes are working absolutely fine and the brake fluid is good as well. So far didn't spot any leakages for the brake fluid too..... any advice/suggestions would be greatly appreciated
Uzee

i have the same problem with my car, i think its just a sensor on one of the brake pads, im not too worried about it, if it really bothers you, make sure all your brake pads are the same size and your tired arent worn out too bad, for some reason, it seems to trick that light. but like i said, its probably just some mud thats on a sensor and its nothing really to worry about. ABS isnt a physical thing, its more like.... a computer program, but if something is wrong with your pads, something will come up