As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CVG TO GSP - DURING CLIMB, THE CREW RECEIVED A BLEED 2 LEAK MESSAGE ON EICAS. THE AIRCRAFT THEN RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE RAN THE BLEEDS AND INSPECTED FOR LEAKS. A LEAK WAS FOUND AT JOINT 4 AND AFTER REPLACING THE O-RINGS AT JOINT FOUR THERE WERE NO FURTHER LEAKS FOUND.