As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: LEFT WING TANK OVERFLOW MESSAGE OCCURRED ABOUT 20 MINUTES AFTER TAKEOFF.FUEL IMBALANCED 300 LBS AND STOPPED IMBALANCING. MAINTENANCE ACCOMPLISHED TSM 28-11-00 FOR SPURIOUS MESSAGE FUEL LEFT WING TANK OVERFLOW AND REPLACED SDAC #1 PER AMM 31-55-34. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.