As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE HAD A SHORT TIME FAULT MESSAGE 75-30452 THE VBV POSITION SIGNALS DISAGREE. DEFERRED PER T/C 78273000. GROUNDED - YES. ACCOMP B737-900 FIM 75-32 TASK 803. ACCOMP. EEC BITE IAW FIM 73-00 TASK 801. NO FAULTS FOUND. ACCOMPLISHED ACTUATORS TEST IAW AMM 71-00-00-700-807-F00, NO FAULTS FOUND. NO CURRENT FAULTS & FAULTS ARE INTERMITTENT. REPLACED THE NR 2 ENGINE RT VBV ACTUATOR IAW AMM 75-32-02-000-802-FOO. LEAK & OPS CHECKED GOOD.