As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. CABIN INTERCOMMUNICATION DATA SYSTEM PANEL INDICATES 1R DOOR PRESSURE LOW DESPITE NORMAL GAUGE PRESSURE INDICATION. FOUND DOOR ASSIST PRESSURE LOW FOUND LEAK AT DIAPHRAGM. REMOVED AND REPLACED DIAPHRAGM, PER AMM 52-10-00-601-001A.