As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING T/C 78273000, FOUND #2 ENGINE 75-20452 AND 75-10452, THE VBV POSITION SIGNALS DISAGREE, SHORT TERM FAULTS. GROUNDED - YES. REMOVED AND REPLACED THE #2 ENGINE LH VBV ACTUATOR REF B737-800 AMM 75-32-02-400-801-F00. OPS CHECK GOOD. LEAK CHECK GOOD. ACTUATOR TEST PASSED.