As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAINT MSG FAULT CODE 75-30401 THE VSV POSITION SIGNAL DISAGREE SHORT TIME FAULT DEFERRED PER TASK # 78273000. GROUNDED - YES. REMOVED AND REPLACED #1 ENG RH VSV ACTUATOR PER B737-900 AMM 75-31-01/401. LEAK & OPS CK GOOD NO DEFECTS NOTED.