As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH TO DCA CREW RECEIVED FUEL IMBALANCE MESSAGES FOLLOWED QRH SAID NEEDED TO LAND WITH 20 DEGREES FLAPS, CREW DIVERTED TO IAD FOR THE LONGER RWY AND SAFETY. AN EMERGENCY WAS NOT DECLARED PAX WHERE NOTIFIED OF THE DIVERSION. DEFERRED FUEL QUANTITY INDICATING SYSTEM AND LEFT FUEL BOOST PUMP. SUPPLEMENTAL INFORMATION: MAINTENANCE REMOVED AND REPLACED THE FUEL SYSTEM COMPUTER AND SYSTEM OPERATIONS CHECKED GOOD.