OL stands for “Overload”. The washer thinks the tub is too hard to move because it’s overloaded and the motor is struggling or the unit is way out of balance causing the washer to struggle. The most common problem is a nut below the inner tub that needs to “float”. Floating is when the tub fills up with water to a certain level the inner basket will rise about 1 inch from the center agitator. What this does is disengage the basket from the motor so that the agitator can rotate independently from the basket. If the basket does not float then when it tries to agitate the whole basket will turn back and forth at the same speed as the agitator and this will cause the OL error code. Of course it is also possible that the inner tub may be jammed in the down position, unable to float off the drive hub because of a rusted drive shaft or just some socks (remember that all washers seem to be eating socks etc.;-) or something else, lodged in between the inner and outer baskets causing the same result. We really would need the exact washer model number for further information.