As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT THE START OF THE TAKEOFF ROLL, THE CREW RECEIVED A HYDRAULIC MAIN TEMPERATURE HIGH MESSAGE. THE CREW ABORTED THE TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE INSPECTED AND REPLACED THE MAIN HYDRAULIC PUMP IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 29-11-04. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.