As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A PS1 CHECK THE AISLE AFT EMERGENCY EXIT LIGHT WORKED INTERMITTENTLY. THE AIRCRAFT WAS REMOVED FROM SERVICE. FOUND THE AISLE AFT EMERGENCY EXIT LIGHT CONNECTION TO BE LOOSE. RECONNECTED THE WIRES IAW EMBRAER AMM 33-50-15. THE AIRCRAFT WAS RETURNED TO SERVICE.