As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK ILLUMINATES ON MASTER CAUTION RECALL. GROUNDED - YES. ACCOMPLISHED PACK ZONE TEMPERATURE BITE PER B737-800 AMM 21-61-00-700-806-002 LH PACK FAULTED TEMP CONTROL VALVE. REMOVED AND REPLACED L/H TRIM MODULATING VALVE IAW AMM 21-61-21/401 OPS CHEK NORMAL.