As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LIM INFLIGHT T0957/13JAN - AIRCRAFT EXPERIENCED FUEL IMBALANCE DURING FLIGHT. LANDED LIM WITHOUT INCIDENT. FOUND RIGHT DEFUELING VALVE ACTUATOR STUCK IN OPEN POSITION DUE TO ICE FORMATION. CLEANED RIGHT DEFUELING VALVE ACTUATOR. SYSTEM GROUND CHECKED NORMAL OPERATION.