As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND ENG #2 SHORT TIME FAULT MSG# 75-30452 " THE VBV POSITION SIGNALS DISAGREE". DEFERRAL REQUIRED PER T/C 78273000. GROUNDED - YES. VERIFIED NO RECENT FAULTS #2 ENGINE ACCOMPLISHED TEST 12 ACTUATORS TEST, TEST PASSED NO FAULTS CH A & B REF B737-900 AMM 71-00-00-700-807-F00.