As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED RIGHT PACK HIGH PRESSURE CAUTION MESSAGE ON DEPARTURE. CREW RAN QRH (QUICK REFERENCE HANDBOOK). PROBLEM PERSISTED. CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED OPERATIONAL CHECK ON RIGHT PACK USING AIRCRAFT MAINTENANCE MANUALS. OPERATIONAL CHECK GOOD. AIRCRAFT RELEASED FOR SERVICE.