As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT ATTENDANT INFORMED FLIGHT DECK OF CIDS CAUTION PANEL MESSAGE STATING CHECK DOOR PRESSURE 1L AFTER DOOR CLOSURE. AND REMAINED AFTER DOOR OPENED. MAINTENANCE FOUND L1 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER DIAPHRAGM DAMAGED / LEAKING. REPLACED DIAPHRAGM PER AMM 52-10-00 AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK.