As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: CABIN DOOR 4R EXHIBITING REPEAT MESSAGES FOR LOW DOOR ASSIST BOTTLE PRESSURE. MAINTENANCE REPLACED THE DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-11-14. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.