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 REPORT CIDS CAUTION LIGHT ON PANEL. MAINTENANCE FOUND THE LEFT AFT EMERGENCY EXIT DOOR DAMPER PRESSURE LOW, SERVICED DAMPER PER AMM 52-20-00 AND CAUTION LIGHT EXTINGUISHED ON FLIGHT ATTENDANTS PANEL.