As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK LIGHT ILLUMINATES UPON MASTER CAUTION RECALL. EXTINGUISHES WHEN MASTER CAUTION SYSTEM IS RESET. GROUNDED - YES. #2 PZTC LOGGED THIS PACK TCV FAULT. RESET FAULT. TCV OPERATION WAS SMOOTH & NORMAL DURING BITE CHECK. OP CK NORMAL. REF B737-800 FIM 21-62 TASK 831.