As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FLIGHT ATTENDANT REPORTED AT FORWARD FLIGHT ATTENDANT PANEL DOOR INDICATION VIEWING PAGE, DOOR 4L CALLED TO CHECK 4L PRESSURE (CAUTION MESSAGE.)(DOOR ASSIST PRESSURE). MAINTENANCE SERVICED THE L4 DOOR ASSIST BOTTLE PER AMM 52-10-00.