As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT DURING FLIGHT, AT 6,000FT, RECEIVED A BLEED 2 LEAK MESSAGE. THE CREW FOLLOWED THE QUICK REFERENCE HANDBOOK AND THE MESSAGE WAS CLEARED WHEN THE NUMBER 2 VALVE WAS CLOSED. RETURNED TO KMSN AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE INLET AND OUTLET OF THE DUAL TEMPERATURE CONTROL VALVE ON PACK 2 LEAKING. THE ITEM WAS THEN DEFERRED. MKE MAINTENANCE REPLACED THE FLEXIBLE COUPLINGS AT THE DUAL TEMPERATURE CONTROL VALVE. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS AT THAT TIME.