As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: 90 MINUTES AFTER TAKEOFF AT 29,000', THE FLT ATTD PANEL SHOWED CHECK DOOR PRESSURE FOR DOOR 4L LIGHT REMAINED ILLUMINATED REMAINDER OF FLIGHT AND TAXI IN. DOOR WAS VISUALLY CONFIRMED LOCKED SHUT WITH NO WARNING LIGHTS IN DOOR WINDOW. NO ABNORMAL CABIN PRESSURE OR DOOR INDICATIONS IN FLIGHT DECK SD DISPLAY. SERVICED 4L DOOR ASSIST BOTTLE PER MM 52-10-00. ALL CKS OK.