As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACCOMPLISHING ASA T/C 78273000 THE FOLLOWING FAULT MSG FOR ENG # 2 WAS SEEN MSG NBR: 75-20452 AND MSG NBR: 75-10452 (SHORT TIME) THE VBV POSITION SIGNALS DISAGREE. FLT. LEG 1-X; 2-X; 3-X. GROUNDED - YES. REMOVED AND REPLACED #2 ENG J9 HARNESS REF B737-900 AMM 73-21-06/401.