As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH FLAP HANDLE TO 5 T/E FLAP LIGHT AND T/E FLAP DISAGREE CAUTION MSG. RETURNED TO GATE FOR MAINT FIM 27-51-00-101 PROCEDURE C/OUT AND ELECTRICAL PLUG CLEANED ON T/E BYPASS VALVE. CHECKED T/E FLAPS OPERATION IN NORMAL HYD MODE AND ALTERNATE ELECTRICAL MODE AND FOUND OK.