As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAP-SLAT CONTROL 2 STATUS MESSAGE. FOUND MESSAGE 27-28852 ACTIVE, TROUBLESHOT IAW FIM 27-52 TASK 837, FSEU2 WAS REPLACED. REPLACED COUPLER B27304 & ACCOMPLISHED GROUND TEST OF FSEU TO PFC INTERFACE. GROUND TEST PASSED. RAN FLAPS FULL DOWN & BACK UP ON SEVERAL DIFFERENT TIMES AND NO MESSAGE.