As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RECALL, THE LEFT PACK LIGHT ILLUMINATED. GOES OUT WHEN MASTER CAUTION PUSHED. ACFT GROUNDED. BITE TEST FAULTED THE LT PACK TCV. REMOVED AND REPLACED LEFT PACK TEMPERATURE CONTROL VALVE IAW AMM 21-51-10. OPS AND LEAK CHECKED GOOD. NO CURRENT FAULTS LOGGED AND ALL INDICATIONS NORMAL.