As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT OVERWING EMERGENCY EXIT DOOR CAUTION DOOR CAME ON JUST BEFORE LANDING. REMOVED LEFT EMERGENCY EXIT DOOR, CLEANED AND LUBED PROXIMITY SENSOR, INSPECTED DOOR, NO PROBLEMS NOTED. REINSTALLED DOOR IAW AMM 52-21-00. INDICATION CHECKED NORMAL.