As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LEFT PACK LIGHT ILLUMINATED DURING MASTER CAUTION RECALL. THE LIGHT EXTINGUISHED ON RESET. GROUNDED - YES. LEFT PACK PRIMARY TEMP CONTROLLER INOP. CLEANED AND LUBED LT RAM AIR DOOR HINGES. TESTED PACK SYSTEM THREE TIMES WITH NO FAULTS. REF FIM 21-63 TASK 801.