As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED LEFT ENGINE LOW OIL PRESSURE 40 TO 22 PSI AT ALL POWER SETTINGS AFTER DEPARTURE FROM DAY. CREW RETURNED TO DAY AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND TROUBLESHOT AIRCRAFT, REMOVED AND REPLACED LEFT ENGINE OIL PRESSURE TRANSDUCER AND PERFORMED CHECKS USING AIRCRAFT MAINTENANCE MANUALS. AIRCRAFT RELEASED FOR SERVICE.