As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX FLIGHT NR 2307: AUTO FEATHER WILL NOT SELECT. AIRCRAFT RETURNED TO GATE. MAINTENANCE INTERROGATED CDS AND FOUND NR 1 AND NR 2 PROPELLER FAULTS 64. C/W Q400 FIM TASK 61-20-02-810-804. CLEARED FAULTS. GROUND RAN ENGINES AT DISC, AUTO FEATHER SELECTED NORMALLY. NO DEFECTS NOTED. FAULTS DID NOT RETURN. AUTO FEATHER TEST PASSED. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.