As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED NR 2 HIGH STAGE VALVE OPEN AND HIGH STAGE LIGHT ON AFTER TAKEOFF. FLIGHT 505 RETURNED TO FIELD. TROUBLESHOT PER FIM 36-10-00 FOUND HI STAGE PILOT OVER PRESSURE SENSOR TRIP A 85 PSI SHOULD TRIP 1 125-165PSI, REPLACED HI STAGE PILOT PER MM 36-11-08.