As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START ON MC RECALL L PACK LT ILLUMINATED. EXTINGUISHED ON RESET LIST COMPLIED WITH. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 21-53 TASK 821 AND PERFORMED PACK TEMPERATURE CONTROL BITE PROCEDURE PER FIM 21-62 TASK 801 CONTROLLER FAULT FOUND ON THE RAM AIR. REPEATED BITE PROCEDURE, NO FAULTS FOUND.