As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STATUS MESSAGE FOR THE RECIRCULATION FAN, NEAR THE R2 DOOR MADE A HIGH PITCH NOISE AND CAUSED A SMOKE ODOR. NOISE AND SMOKE WENT AWAY WITH RECIRCULATION FANS SWITCHED OFF. REPLACED FORWARD UPPER RECIRCULATION FAN IAW IAW 21-25-01. AIRCRAFT WAS GROUNDED.