As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE MAINTENANCE THE LEFT OVERWING EMERGENCY EXIT DOOR DID NOT INDICATE A OPEN MESSAGE ON THE EICAS WHEN THE DOOR WAS OPEN. MAINTENANCE INSPECTED AND FOUND THE MICROSWITCH ACTUATION PIN TO BE STICKING. THE PIN WAS LUBRICATED AND OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS RELEASED FOR SERVICE.