As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THAT THEY RECEIVED A L PROP OIL PRESSURE LOW CAS CAUTION MESSAGE. THEY RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT-HAND GEARBOX OIL ABSOLUTE PRESSURE SENSOR. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.