As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATED ON RECALL. EXTINGUISHES DURING MASTER CAUTION RESET. GROUNDED - YES. BITE TEST ACCOMPLISHED IAW B737-900 AMM 21-62 TASK 801 FOR BOTH CONTROLLERS. PACK CONTROLLER #2 PASSED, PACK CONTROLLER#1 (LH) SHOWED FAULT CODE THIS PACK-TCV FAULT, WAS ABLE TO BE CLEARED. DUE TO HISTORY AS PER B737-900 FIM 21-62TASK 830 LEFT TEMP CONTROL VALVE REMOVED/REPLACED IAW AMM 21-51-10 SYSTEM OK.