As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START RIGHT PACK LIGHT CAME ON UPON RECALL. PACK LIGHT WENT OUT UPON MASTER CAUTION RESET. GROUNDED - YES. COULD NOT DUPLICATE MALFUNCTION. NO FAULTS LOGGED ON EITHER PZTC. BOTH PZTC BITE CHECK NORMAL, REF AMM 21-61-20-400-801.