As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN DIVERTED DENVER DUE TO SMOKE IN CABIN. LOUD NOISE & VIBRATION HEARD THEN STOPPED AS THEY WERE DIVERTING TO DENVER. PERFORM AMM TASK 05-51-10-200-801C1 DUE TO REPORT OF SMOKE SMELL. PFR SHOWS VENT EXTRACT FAULT 3 TIMES ON TAXI OUT. EXTRACT VENT FAULT DISPLAYED. VENT FAN 18HQ SEIZED, REPLACED VENT EXTRACT FAN.