As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2351: DESCENDING THROUGH 12K, NR 2 ENGINE FADEC ILLUMINATED. RAN CHECKLIST. ALL OTHER ENGINE PARAMETERS WERE NORMAL. MAINTENANCE REMOVED AND REPLACED NR 2 ENGINE P2.2 IBV IAW Q400 AMM TASKS 75-31-11-000-801 AND 75-31-11-400-801. CLEARED FADEC FAULTS. GROUND RAN NR 2 ENGINE. CHECKED FOR FADEC FAULTS WITH NONE FOUND. AIRCRAFT RETURNED TO SERVICE.