As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND FAULT CODE 75-10401 (VSV POSTION SIGNALS DISAGREE) SHORT TIME FAULT DEFERRED PER T/C 78273000 #1 ENG. GROUNDED - YES. PER B737-800 FIM 75-31 TASK 804 INITIAL EVALUATION: PERFORMED #1 ENG EEC TEST. TEST PASSED NO FAULTS. PERFORMED ACTUATORS TEST. NO FAULTS.