As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING T/C 7827300 FOUND FAULT CODE 75-20452, #2 ENGINE. THE VBV POSITION SIGNALS DISAGREE, SHORT TIME FAULT. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE EEC REF B737-800 AMM 73-21-60 OPENED/RESET 4 EA C/B P6-2. ALL GND FUNCTIONAL TESTS PASS. PARTS VERIFICATION REF IPC 73-21-60-03 ITEM 80.