As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED FUEL CHANNEL 1/2 FAIL CAUTION MESSAGE WITH YELLOW DASHED LINES IN ALL FUEL QUANTITY READINGS AFTER DEPARTURE FROM CLT. CREW RETURNED TO CLT AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT, REMOVED AND REPLACED FUEL SYSTEM COMPUTER AND PERFORMED CHECKS USING AIRCRAFT MAINTENANCE MANUALS. AIRCRAFT RELEASED FOR SERVICE.