As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING FLIGHT AT FL360 FLIGHT ATTENDANT REPORTED CAUTION MESSAGE ON PANEL AND DOOR 3R SHOWED "CHECK DOOR PRESSURE" MESSAGE. COCKPIT INDICATIONS WERE NORMAL. MAINTENANCE SERVICED DOOR ASSIST BOTTLE AT 3R DOOR PER AMM TASK 52-10-00-614-001 AND MESSAGE CLEARED.