As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: WHEN ARMING DOORS CIDS PANEL INDICATES DOOR 4L IS NOT ARMED, INDICATION ON DOOR/OXY PAGE SHOWS ARMED. MAINTENANCE VERIFIED ARM/DISARM INDICATION ON CIDS PANEL IS NORMAL. 4L DOOR DAMPER AND EMERGENCY OPERATION CYLINDER SHOWS LOW PRESSURE ON CIDS PANEL. MAINTENANCE SERVICED 4L DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-10-00.