As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF AT 100 AGL, RECEIVED AN AURAL OIL WITH TRIPLE CHIME. NO ASSOCIATED MAP WARNINGS AND NO ENGINE PARAMETERS TO SUPPORT THE WARNING. ALARM WAS CONTINUOUS AND COULD NOT BE CANCELLED. RETURNED TO SLC. REMOVED AND REPLACED OIL PRESSURE TRANSDUCER CANNON PLUG AND AURAL WARNING UNIT.