As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN TOGA PRESSED FOR TAKEOFF AUTOTHROTTLES DISENGAGED. TRIED TWICE BOTH TIMES AUTOTHROTTLES DISENGAGED. PUSHED THROTTLES UP MANUALLY TO CORRECT TAKEOFF POWER SETTING. REENGAGED AUTOTHROTTLES AND THEY WORKED PROPERLY. GROUNDED - YES. ACCOMPLISHED AUTOTHROTTLE BITE B737-900 FIM 22-31 TASK 801. CURRENT STATUS, NO FAULTS. ALL INTERACTIVE TESTS PASS. NO HISTORY PAST 30 DAYS.