As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATB, FLT 16 RETURNED. DURING CLIMBOUT THE RIGHT ENGINE BLEED OFF MESSAGE ILLUMINATED. AFTER DISCUSSION WITH DISPATCH AND MAINTENANCE CONTROL THE CAPTAIN DECIDED TO RETURN FOR MAINTENANCE. MAINTENANCE REMOVED AND REPLACED THE RIGHT PRESSURE REGULATOR SHUTOFF VALVE (PRSOV). ETOPS CATEGORY 'B': DIVERSION OR TURNBACK