As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW A FLAP FAIL MESSAGE WHEN FLAPS WERE RETRACTED AFTER TAKEOFF. FLAPS REMAINED AT 9 DEGREES. FOLLOWED AOM PROCEDURES AND LANDED WITH FLAPS AT 9 DEGREES AND OVERWEIGHT AT 42,800 AND 300 FPM. MAINTENANCE REMOVED AND REPLACED THE FLAP ELECTRONIC CONTROL UNIT IAW MFG MM. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE.