As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CRUISE, NR 1 ENGINE HAD A LOW OIL PRESSURE INDICATION. THE CREW SHUT IT DOWN AND RETURNED TO THE DEPARTURE AIRPORT WHERE AN UNEVENTFUL SINGLE ENGINE LANDING WAS MADE. TROUBLESHOOTING FOUND THAT A CONNECTOR ON THE ENGINE CAUSED A FALSE INDICATION.