As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SPEED TRIM FAIL LIGHT DURING MASTER CAUTION RECALL, EXTINGUISHES WHEN MC RESET. GROUNDED - YES. C/W SPEED TRIM FAIL LIGHT B737-9 IFIM TASK 22-11-00-810-D71 AND EFCS BITE PROCEDURE PER B737-9 AMM 22-11-00-740-814 AUTO TEST PASSED FAULT LIGHT EXTINGUISHED.