As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK LIGHT ILLUMINATED IN FLIGHT AFTER RUNNING QRH PACK LIGHT EXTINGUISHED. GROUNDED - YES. BITE TEST OF #1 AND #2 PACK/ZONE TEMP CNTLR SHOWS NO CURRENT FAULT, NO FAULT LAST FLIGHT LEG AND VERIFY TEST ALSO PASSED REF B737-800 AMM 21-61-00-700-806-002, DURING VERIFY PART OF #2 PACK/ZONE TEMP CTL TEST NOTICED THAT RAM AIR INLET DEFLECTOR DOOR REMAINS OPEN.