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, THEY RECEIVED A PACK 1 VLV CLOSED MSG. THE ACFT WAS DIVERTED & LANDED WITHOUT INCIDENT. REPLACED THE DUCT ON THE FWD SIDE OF THE DUAL TEMPERATURE CONTROL VLV. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.