As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATO- APPROX. 5 KNOTS DUE TO LEFT THROTTLE DID NOT ADVANCE WHEN TOGA SELECTED. FORWARD TO MEL VIA FLIGHT CREW PLACARD. RECORDED FAULT CODE 22-31687 (ASM-1 RATE MON). NEED ASM-1 REPLACED. CONTINUE ON MEL. 22DEC25 REPLACED LEFT AUTO THROTTLE SERVO MOTOR PER B737 AMM 22-31. (LP 1356655)