From your manual: oL (overloaded) means the Load is too large: If an overload is detected, the washer will drain any water and in display detergent in the washer. Remove several items and add HE detergent. Close lid and press START/PAUSE.
If you are getting this error code with the basket completely empty, check underneath the washer to see if a toy or other item could be interfering with the rotation of the motor. A friction problem is normally causing this error code if it occurs with an empty basket. See if the basket spins freely when it is empty. If not, you may have an item stuck between the spin basket and the washer tub.
If the washer basket spins freely, and you are not overloading the washer, here is a trick that might work: "If it works great, if it doesn't then you've lost nothing. Unplug the washer, plug it back in, raise and lower the lid completely 5 times, hit the power on button. This may not be the exact way to reset the electronic board, but this worked on my particular machine." That was an answer from a prior question that worked for this problem. Hope this helps!