As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RH PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL: EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. TROUBLESHOT PER FIM 21-53 TASK 821. FOUND THIS PACK TCV FAULT ON R/H TEMPERATURE CONTROLLER, TROUBLESHOT PER B737-900 FIM 21-62 TASK 831. PERFORMED PACK TEMP CONTROL BITE TEST, NO FAULTS FOUND. OPERATED BOTH PACKS WITH NO DEFECTS NOTED PER AMM 21-00-00 .