What was found
SELECTED FLAPS TO 9 DEGREES AND RECEIVED FLAP LOW SPEED AND FLAP FAIL MESSAGE, FLAP INDICATOR REMAINED AT ZERO, CMC SHOWED FLAP DRIVE SENSOR FAIL MESSAGE. TROUBLESHOT FLAP DRIVE SENSOR FAIL MESSAGE WITH NO DEFECTS. RESET SYSTEM PER EMB FIM TASK 27-51-06-810-805. SYSTEM OPERATIONAL CHECKED GOOD, RETURNED AIRCRAFT TO SERVICE.