As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AFTER ARMING ALL DOORS FOR DEPARTURE , RECEIVED FAULT MESSAGE ON THE FLIGHT ATTENDANT PANEL STATING CHECK DOORS PRESSURE FOR DOOR 2R. MAINTENANCE CHECKED AND FOUND DOOR BOTTLE PRESSURE LOW ON 2R DOOR. SERVICED DOOR 2R BOTTLE PER AMM 52-22-00-614-002A.