As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE BEGINNING THE CLIMBOUT, THE CREW RECEIVED A PACK OVER PRESSURE AND PACK FAIL MESSAGE FOR BOTH PACKS. THE CAPTAIN THEN DECIDED TO EXECUTE A RETURN TO THE FIELD. OUTSTATION MAINTENANCE INSPECTED AND PERFORMED OPERATIONAL CHECKS IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 21-00-00 AND FOUND THAT BOTH PACKS WORKED NORMALLY. AFTER THESE POSITIVE OPERATIONAL CHECKS, THE AIRCRAFT WAS RELEASED FOR SERVICE.