As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED HIGH APU OIL PRESSURE. AIRCRAFT DIVERTED TO IAD LANDING WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACE THE APU OIL PRESSURE SWITCH PER THE AIRCRAFT MAINTENANCE MANUAL. CHECKS WERE MADE PER THE AIRCRAFT MAINTENANCE MANUAL. AIRCRAFT WAS RELEASED FOR SERVICE.