As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURN BACK. NR 1 ENGINE OIL TEMP OFF SCALE HIGH FOR AT LEAST 10 MINUETS . ENGINE SHUT DOWN. WIRING CHECKS ACCOMPLISHED AND FOUND NR 1 OIL TEMP SENSOR CONNECTOR DEFECTIVE . CONNECTOR REPLACED AND ALL OPERATIONS NORMAL. ENGINE RUN UP NORMAL. NR 1 ENGINE OIL TEMP SENSOR REPLACED AS PRECAUTION AND ENGINE RUNUP. LEAK CHECKED NORMAL.