As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI OUT WHILE PRESSING RECALL RIGHT PACK LIGHT ILLUMINATED, EXTINGUISHED ON MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED R/H INLET RAM AIR DOOR ACTUATOR PER B737-900 AMM 21-51-21. OBSERVED PROPER OPERATION OF BOTH (INLET AND EXHAUST) ACTUATORS AND NO FAULTS NOTED ON PFTC #2 BITE CHECK.