As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - LEFT ENGINE BLEED OFF LIGHT ON IN FLT. REPLACED LT ENGINE PRSOV IAW AMM36-11-09. WIRING AND VOLTAGE CHECKED OK IAW FIM 36-10-00, FIG 115. INSPECTED PNEU DUCTS, NO DEFECTS NOTED. REPLACED PRESSURE REGULATING VALVE CONTROLLER IAW AMM 36-11-19. GROUND RUN AT IDLE CHECKED OK. LEAK CHECKED OK. OPS CHECK OK AT HIGH POWER RUN IAW AMM 36-11-09.