As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED TO MKE DUE TO LT ENGINE LOW OIL PRESSURE MESSAGE. LOWEST OIL PRESSURE 61.5. NO OIL QTY LOSS OR OIL TEMP EXCEEDANCES. ENGINE WAS NOT SHUT DOWN. OIL PRESSURE ZONE A. REPLACED OIL PRESSURE SENSOR, OIL PUMP AND PRV. RAN ENGINE OIL PRESSURE STABLE AT 83 PSI. (LP# 7895098; AIRCRAFT WAS GROUNDED).