As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH ALL DOOR INDICATIONS NORMAL, DOOR SEAL WOULD NOT INFLATE. MAINTENANCE INSPECTED DOOR SEAL SUPPLY LINES AND PRESSURIZING VALVE, NOTING NO DEFECTS. DOOR SEAL WAS CLEANED OF DIRT AND GRIME. DOOR SEAL AT THIS TIME INFLATED PROPERLY AND AIRCRAFT WAS CHECKED FOR PRESSURIZATION. SYSTEM CHECKED GOOD AND AIRCRAFT WAS RETURNED TO SERVICE.