As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EIS CAUTION ILLUMINATED AS THE ENG OIL PRESS GAUGE DISPLAYED AN INCREASE IN OIL PRESS ABOVE THE DESIGNATED RED LINE. THE OIL PRESS THEN RETURNED TO NORMAL OPERATING CONDITIONS. SHORTLY AFTER, THE OIL PRESS GAUGE ILLUSTRATED A MAXIMUM ALLOWABLE DISPLAY OF THE INSTRUMENT & TRIGGERED THE RED EIS WARNING LIGHT.