As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YIP - UNSCHEDULED LANDING MADE, OIL QTY WENT TO ZERO AND LOW OIL PRESSURE LIGHT FLICKERED. THE OIL PRESSURE REMAINED NORMAL ACCORDING TO THE PRESSURE INDICATOR. REPLACED THE OIL QTY TRANSMITTER AND REPLACED THE OIL PRESSURE SWITCH. ENGINE OPERATED AND CHECKED FOR PROPER OPERATION AND FOR LEAKS. NO DEFECTS NOTED. REFERENCE Y2PA96060.