As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 ENGINE OVERSPEED FAIL CAUTION CAME ON IN FLIGHT. DURING TROUBLESHOOTING, FOUND OVERSPEED SENSOR BAD. FAILS TESTS IN ENGINE MANUAL 77-14-00-750-801-A01. COIL READS OPEN ON PINS 4 AND 5. REMOVED AND REPLACED OVERSPEED SENSOR IAW ENGINE MANUAL TASK 77-14-00-750-801-A01. T/P MOC SUCCESSFULLY COMPLETED.