As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: CIDS PANEL SHOWS CHECK DOOR PRESSURE CAUTION FOR DOOR 4L. NO OTHER APPARENT MALFUNCTION. SERVICED 4L DOOR DISCHARGING/CHARGING OF THE DOOR DAMPER AND EMERGENCY OPERATION CYLINDER OF THE PASSENGER IAW AMM 52-10-00.