As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE OIL FILTER LT STATUS MESSAGE. ALSO RIGHT PACK FCV STATUS MESSAGE. REPLACED THE OIL FILTER DIFFERENTIAL PRESSURE SWITCH. THE REMOVED SWITCH WAS A PRE PW SERVICE BULLETIN PW4G-112-79-12 CONFIGURATION. MESSAGE WAS DUE TO FAILED PROX SWITCH ON LWR RT FLOW CONTROL VALVE.