As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) JUST PRIOR TO TOP OF CLIMB, LEFT FUEL QUANTITY AND TOTAL FUEL QUANTITY STARTED TO REDUCE, FOLLOWED BY FUEL IMBALANCE MESSAGE. CREW ELECTED TO RETURN TO DEPARTURE AIRPORT. ON FINAL APPROACH FUEL INDICATIONS RETURNED TO NORMAL. FUEL SYSTEM INSPECTED, WITH NO LEAKAGE FOUND. AIRCRAFT DISPATCHED UNDER MEL. ON NEXT MAINTENANCE VISIT FUEL COMPUTER REPLACED. (TC# 20070124001)