As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ENGINE OIL PRESSURE GAUGE WAS INTERMITTENT. RESISTANCE CHECK OF TRANSMITTER FOUND IT TO BE OPEN CIRCUIT. REMOVED TRANSMITTER CASE TO FIND THAT INTERNAL WIRE WAS MISROUTED CAUSING IT TO BE PINCHED AND EVENTUALLY CUT THROUGH. TRANSMITTER REPLACED.