As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED BIT PER B737-800 FIM 21-62 TASK 801. INITIALLY NO FAULTS NOTED. NOTED TCV FAULT ON LATER BIT CHECK. TCV FAULT CLEARED PACK OPERATED NORMALLY AT THAT TIME. SUSPECT FAULTY RH TCV. REMOVED AND REPLACED #2 PACK TCV PRECAUTIONARY REF B737-800 AMM 21-51-10-400-801. PERFORMED PZTC BITE REF AMM 21-61-00-700-806-002, OP CHECK GOOD. LEAK CHECK GOOD. ETOPS GROUND VERIFICATION SUCCESSFUL.