As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATED - RESET. GROUNDED - YES. PERFORMED BITE TEST OF # 1 AND # 2 PACK CONTROLERS FOUND # 1 PACK CONTROLLER TCV FAULT, PERFORMED VERIFY OF BOTH CONTROLLERS NO FAULTS FOUND REF B737-800 FIM 21-62 TASK 801 RESET BOTH CONTROLLERS AND PERFORMED BITE CHECK AGAIN NO FAULTS FOUND.