As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2356, INTERMITTENT FLAP DRIVE CAUTION LIGHT AFTER FLAPS SELECTED TO 15 DEGREES. WIGGLING FLAP SEEMED TO REDUCE THE NUMBER OF TIMES CAUTION LIGHT CAME ON. MAINTENANCE REMOVED AND REPLACED FLAP CONTROL MODULE IAW 27-51-06-000-801 AND 27-51-06-400-801. OPS CHECK GOOD. NO FAULTS PRESENT. RII COMPLIED WITH. AIRCRAFT RETURNED TO SERVICE.