As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIOR TO TAKEOFF DURING TAXI, THE CREW NOTED A NUMBER ONE PITOT HEAT FAIL WARNING MESSAGE. THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED AND REPLACED THE NUMBER ONE PITOT HEAD, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 34-11-04. OPERATION CHECKS WERE COMPLETED.