As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, THE CREW RECEIVED A RIGHT HAND PROP OIL PRESSURE LOW CAS MESSAGE. ALL OTHER ENGINE INDICATIONS WERE NORMAL AND WITH MAINTENANCE CONTROL, CONCLUDED THERE WAS AN INDICATION PROBLEM. THE CREW REQUESTED PRIORITY HANDLING FROM PHL ATC THEN DIVERTED TO PHL AS A PRECAUTION. FLIGHT 4152 THEN LANDED WITH NO FUTHER INCIDENTS. MAINTENANCE INSPECTED AND REPLACED THE OIL PRESSURE SWITCH IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 79-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.