As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI IN AFTER LANDING WE NOTICED A RIGHT PACK LIGHT, CLEARS WITH MASTER CAUTION. ACFT GROUNDED. PERFORMED FIM 21-53-804. RIGHT PACK LIGHT ON DURING GROUND OPERATION AND STAYS OFF AFTER RESET. OPERATED RIGHT A/C PACK. LIGHT STAYS OFF. PERFORMED RIGHT PACK/ ZONE TEMP CONTROLLER BITE, IAW AMM 21-61-00. BITE TEST PASSED WITH NO FAULTS.