As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRIM AIR PRSOV R RIGHT TRIM AIR PRESSURE RELIEF SHUTOFF VALVE (PRSOV) FAILED. STATUS MSG01- NOT ACTIVE TAXI OUT MODE DEPENDENT; TRIM AIR PRESSURE REGULATING AND SOV (RIGHT) TORQUE MOTOR IS NOT IN COMMANDED POSITION. DB- CABIN TEMPERATURE CONTROLLER (R CHAN2)MSG-2124202 INACTV TA MODE. DF PER MEL2162E LOCKED OUT RIGHT SIDE TRIM AIR PRSOV PER MM. REPLACED RT TRIM AIR PRSOV PER MM. MAT TEST PASSED ON LRU. NO EICAS FAULT NOTED.