As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATED WITH MASTER CAUTION RECALL AND EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED-YES. PZTC BITE CHECK, REF B737-800 FIM 21-62 TASK 801. RECORDED FAULT LT RAM AIR ACT. ACCOMP FIM 21-62 TASK 837. INTERMITTENT FAULT RESET PZTC BITE CHECK GOOD, REF FIM 21-62 TASK 801. OK FOR SERVICE.