As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: PILOT REPORTS L4 DOOR ASSIST BOTTLE SHOWS LOW PRESSURE INDICATION ON FLIGHT ATTENDANTS PANEL. MAINTENANCE FOUND THE DOOR ASSIST BOTTLE SERVICING / SCHRADER VALVE LOOSE AND LEAKING. TIGHTENED SERVICING / SCHRADER VALVE AND SERVICED DOOR ASSIST BOTTLE PER AMM 52-10-00. A SATISFACTORY LEAK CHECK WAS ACCOMPLISHED AND THE MESSAGE ON THE FLIGHT ATTENDANTS PANEL CLEARED.