As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN COULDN'T KEEP UP ON DESCENT THRU CABIN ALT ABOUT 3000AGL AT GATE IT READS 100. REPLACED NR 2 CPC AND PRESSURIZATION & INDICATION WARNING MODULE. ACP CPC BITE FIM21-30-00. PRESSURIZED ACFT CABIN PRESS INDICATIONS NORMAL AND BITE CHECKED OK.