As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 4455 THE CREW REPORTED A FUEL TANK NR 2 FUEL LEVEL ERROR IN FLIGHT, FUEL FLUCTUATING BETWEEN 4100LBS CAUSING IMBALANCE. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. R & R THE NR 2 TANK UNIT IN THE RT WING, OPS AND LECK CHECKED WITH NO DEFECTS