As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RECALL LEFT PACK LIGHT ILLUMINATED, EXTINGUISHES WHEN RESET. GROUNDED - YES. PERFORMED BITE CHECK ON #1 AND #2 TEMP CONTROL BOXES REF B737-800 FIM 21-62 TASK 801, FLIGHT DECK LIGHT ILLUMINATED ON #2 TRIM VALVE. RAN BOTH PACKS FOR APPROX 25 MINUTES THEN PERFORMED BITE CHECK ON BOTH #1 AND #2 TEMP CONTROL BOXES. NO FAULTS NOTED.