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 ON RESET. GROUNDED - YES. PERFORMED PTC BITE TEST. L/H PACK TCV SHOWED. PERFORMED PTC BITE TEST. NO FAULTS. INTERMITTENT FAULT. REF B737-800 FIM 21-62 TASK 830. RAN L/H PACK FOR 10 MIN AND NO FAULTS.