As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE TAXI OUT FOR TAKEOFF, A LEFT HAND PROPELLER HEAT FAIL WARNING MESSAGE ILLUMINATED. THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED AND CLEANED THE LEFT HAND PROPELLER HEAT BRUSH BLOCK. OPERATIONAL CHECKS WERE COMPLETED, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 30-61-05, AND THE AIRCRAFT WAS RETURNED TO SERVICE.