ASB light is on, what can be the problem to my car -vwpolo 2000-

The ABS light turns on when there is a problem with the car's braking system. This can mean that the ABS brakes need fluid or that it is malfunctioning. If the ABS light remains illuminated, this indicates a major problem that has disabled the ABS brakes. A major problem could be a faulty wiring harness or wheel speed sensor. If the light turns on then goes out this indicates a minor problem and the ABS brakes may still function. This is more likely to be an issue of low brake fluid or a brake pad that is wet or worn out. Read more: Why Does My ABS Light Flash? | eHow.com http://www.ehow.com/facts_6962133_abs-light-flash_.html#ixzz2MDlathAt