As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORT STATED ON TAXI OUT, THE F/O SELECTED FLAPS TO 8 DEGREES AND A FLAP FAIL CAUTION APPEARED ON ED1. COMPLIED WITH THE QRH AND CYCLED THE APPLICABLE CIRCUIT BREAKERS. THE FLAP FAIL INDICATION REAPPEARED. AFTER TALKING TO MX RTG. RECONNECT LT, RT PDU FOR AFTER TROUBLESHOOTING. CLOSE ACCESS PANELS AT OUTBOARD FLAP STATIONS. RIGGED RT FLAP CONTROL SYSTEM. REMOVED AND REPLACED FECU.