As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 ENG FADEC CAUTION CAME ON AS WELL AS POWERPLANT MESSAGE ON E.D. DIRVERTED AND ACCOMPLISHED UNEVENTFUL LANDING. REMOVED FROM SERVICE. INTERROGATED CDS AND FOUND FC 912 POSTED ON CHANNEL A&B ON 11-AUG-2022 AT 17:41:48 ON ENGINE #1.REPLACED P2.2 INTERSTAGE BLEED VALVE ON #1 ENGINE IAW Q400 AMM TASKS 75-31-11-000/400-801. FAULT DID NOT RETURN. NO FURTHER DEFECTS NOTED. RETURNED TO SERVICE.