As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING TASK CARD #78273000, #1 ENG HAS SHORT TIME FAULT 75-30601, TBV POSITION SIGNAL DISAGREE. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE TRANSIENT BLEED VALVE IAW B737-900 AMM 75-23-01-000-801-F00/400-801-F00. ACTUATORS TEST GOOD & IDLE POWER LEAK CHECK GOOD. NO FAULTS IN CDU. ETOPS GROUND TESTS SUCCESSFUL.