As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, #1 ENG OVERSPEED FAILURE CAUTION ILLUMINATED ON THE CAD AND WOULD NOT GO OUT. DURING TROUBLESHOOTING, FOUND PINS 2-3 READ OPEN ON CONTINUITY TEST. SHOULD READ 110 OHMS, +/- 15 OHMS. REMOVED AND REPLACED OVERSPEED SENSOR IAW ENGINE MANUAL 77-14-00-900-802-A01. MOC SUCCESSFULLY COMPLETED.