As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 9658 - DURING CRUISE FLIGHT RECEIVED A RIGHT ENGINE OIL PRESSURE WARNING MESSAGE, CREW DECLARED AN EMERGENCY, PERFORMED AN I.F.S.D. AND DIVERTED TO MDT. FLIGHT LANDED WITHOUT INCIDENT. REPLACED THE RIGHT ENGINE OIL PRESSURE TRANSDUCER.