As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING TC 78273000 # 1 ENG MAINT FAULT 75-30401; THE VSV POSITION SIGNAL DISAGREE. SHORT TIME FAULT. GROUNDED - YES. PER B737-800 FIM 75-31 TASK 804 INITIAL EVALUATION L & R ACTUATORS GVI GOOD AND ELECTRICAL CHECKS PASS. NO FAULTS IN ENG HISTORY. EEC BITE NO FAULT. ACTUATORS TEST PASS. REPAIR CONFIRMATION SUCCESSFUL.