As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOTED UPON INSTALLATION AND ENGINE LEAK/FUNCTIONAL TESTS, THAT OIL PRESSURE/TEMPERATURE INDICATOR WAS INDICATING 'LOW' PRESSURE (SYSTEM WAS BLED PRIOR TO TESTS). INSTALLED "CALIBRATED' DIRECT READING PRESSURE GAUGE FOR CONFIRMATION. ENGINE RUN-UP AND TEST CONFIRMED ERRONEOUS INDICATION OF 'NEW' INDICATOR. INSTALLED ANOTHER LIKE SERVICEABLE INDICATOR.