As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2391-THE CREW WAS UNABLE TO TRANSFER FUEL IN FLIGHT, IN EITHER DIRECTION. THE NR 2 FUEL VALVE REMAINED CLOSED. MAINTENANCE INSPECTED THE AIRCRAFT SYSTEM AND REPLACED THE FUEL TRANSFER SHUT-OFF VALVE ACTUATOR. OPERATIONAL CHECKS WERE GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE.