As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R4 DOOR EPAS SENSOR STATUS MSG FOLLOWING FIM 62-10-F1-T7A-421A-A. INSPECTED R4 DOOR ARM AND DISARM SENSOR. FOUND CONNECTOR LOOSE. CLEANED SENSOR. PERFORMED OPS CHECK IAW AMM DMC-B787-A-52-11-21-03A-320A-A. OPS CHECKED GOOD. SYNOPTIC PAGE SHOWS CORRECT INFO DURING CYCLING OF DOOR OPEN AND CLOSE PLUS ARM AND DISARM CYCLES.