As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ALTITUDE CLIMBED TO 11900 IN AUTO MODE, AND CONTINUED IN MANUAL MODE TO 12100. DIVERTED. MX FOUND CARGO DOOR SEAL DAMAGED, REMOVED AND INSTALLED CARGO DOOR SEAL WITH INSERTION REPAIR IAW AMM 52-00-04. PRESSURIZATION OPS CHECKED GOOD IAW AMM 21-30-00. ACFT APPROVED FOR RETURN TO SERVICE.