As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AFT CABIN LEFT EXIT DOOR SHOWS ARMED BUT NOT ARMED IN THE FLIGHT ATTENDANT PANEL AND DOOR DISPLAYS. MAINTENANCE REPLACED L4 DOOR DETECTOR PROXIMITY SWITCH 7WN1 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK WITH NO ISSUES NOTED.