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 REPORTS PRESSURE ANNUNCIATION FOR DOOR L4 ON THE DISPLAY. SLIDE PRESSURE GAUGE READS NORMAL THROUGH ITS WINDOW. MAINTENANCE SERVICED THE L4 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-10-00-614-001.