As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2453 ICT/MSP CREW RECEIVED FLAP FAIL CAUTION MESSAGE WHILE BOARDING PASSENGERS. MAINTENANCE PERFORMED FIM TROUBLES SHOOTING PER AD 2009-06-12 FOUND FLAP ELECTRONIC CONTROL UNIT (FECU) SHOWING CODE FOR INTERNAL FAILURE. FECU REMOVED AND REPLACED PER AMM.