LG refrigerator error code E and rF

EF is evaporator fan motor. Since it’s showing on the freezer side it would be the fan in the freezer. The part #AEB72913930 is the freezer evaporator fan motor assembly. This is the back cover in the freezer section. It has the fam motor and sensor. If the error EF was displayed next to refrigerator it would mean the evaporator fan in the fresh food section, upper section, had failed. I hope this helps.