As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ON RECALL PRIOR TO DESCENT. GROUNDED - YES. ACCOMPLISHED BITE OF BOTH PZTC REF B737-900 FIM 21-62 TASK 801 LEFT ON BIT FAULTED EXIT SRADA, REST OF BIT GREEN GO. RIGHT PZTC NO FAULTS. RESET LEFT PZTC RAN PACKS AND RE-ACCOMPLISHED BITE WITH NO FAULTS, OPS CKD NML.