As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONT ZONE TEMP LIGHT ON RECALL AFTER STARTUP. GROUNDED - YES. ACCOMPLISHED PZTC BITE CHECK FOUND FLIGHT DECK TAV FAULT ON #2 CONTROLLER. FAULT RESETS AFTER VERIFY TEST. RAN PACKS AND FAULT DOES NOT RETURN. REF B737-800 FIM 21-62 TASK 801.