As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACCOMPLISHING TC 78276000 FOUND #2 ENG FAULT CODE 75-10592. THE TBV POSITION SIGNAL IS OUT OF RANGE. LONG TIME FAULT. GROUNDED - YES. REMOVED AND REPLACED ENGINE #2 TBV REF B737-800 AMM 75-23-01-000-801-F00/75-23-01-400-801-F00, PERFORMED IDLE POWER LEAK CHECK TEST PER AMM TASK 71-00-00-700-801-F00, NO LEAKS NOTED, PERFORMED ACTUATOR TEST REF AMM 71-00-00-700-807-F00 TEST PASS AND NO ACTUATORS FAULTS FOUND, ORIGINAL FAULT MESSAGE TBV SIGNAL OUT OF RANGE CLEARED.