As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 4993 - EN ROUTE LGA-LEX RECEIVED A LEFT ENGINE OIL PRESSURE DROP ASSOCIATED WITH AN OIL PRESSURE WARNING MESSAGE, CREW DECLARED AN EMERGENCY, DIVERTED TO CKB AND PERFORMED IFSD OF THE LEFT ENGINE. FLIGHT LANDED WITHOUT INCIDENT. REPLACED THE LEFT ENGINE OIL PRESSURE TRANSDUCER.