As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"COND TEMP SENSOR R" STATUS MESSAGE DISPLAYED DURING AIRCRAFT TOW FROM HANGAR TO GATE. RESET PACK CONTROLLER AND CABIN TEMP CONTROLLER, FAULT CLEARED, OP CHECKED GOOD. REPLACED SECOND STAGE TURBINE BYPASS VALVE (RT PACK) IAW FIM 21-52 TASK 834 AND AMM 21-52-32. MAINT MESSAGE 21-23502. GROUND TESTED OK AND OPS TESTED OK.