As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT AT FL 360, EICAS MESSAGE "DOOR PAX AFT OPEN" STATUS PAGE INDICATED L2 DOOR OPEN. ALL INDICATIONS ON DOOR WERE NORMAL AND MESSAGE EXTINGUISHED IN LESS THAN 1 MINUTE. R & R L2 DOOR INDICATION HARNESS IAW MM 52-72-21. OPS CHECK GOOD.