As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK LIGHT ILLUMINATED AFTER ENGINE START AND RECALL PRESSED. GROUNDED - YES. RH PACK PRIMARY TEMP CONTROL INOP REF B737-800 FIM TASK 21-53 TASK 821, #2 PZTC BITE LOGGED THIS PACK TCV, FAULT RESETTABLE. PZTC BITE VERIFY TEST GOOD W/O FAULTS, VERIFIED RIGHT PACK OPS CHECKED NORMAL ON GND W/O FAULTS.