As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR PAX AFT OPEN WARNING MESSAGE AT 36000 FEET MESSAGE WENT AWAY THEN CAME BACK AT 38000 WITH A PRESSURE 8.3 PSI AND STRONG PHYSICAL PRESSURE SYMPTOMS VERY NOTICEABLE BY CA & FO. TROUBLE SHOT PER FIM 52-72-00 DOOR CLOSED SENSOR DIMENSION Y IS WITHIN RANGE AT .047 IN, AND LATCH SENSOR TARGET TRAVEL DISTANCE W IS IN RANGE AT .15 IN NO ADJUSTMENT REQUIRED IAW AMM 52-72-21 OPS CHECK GOOD IAW AMM 52-70-00 MEL ITEM RESTORED