As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR ALERT- PARKING BRAKE NOT RELEASED CAUTION MSG, EMERGENCY DECLARED LANDED SAFELY/ TAXIED UNDER OWN POWER TO THE GATE. NOT RWD CAUTION MSG REVD IN FLT-C/A-T/S SYS IAW E175 FIM 32-41-00-810-864 AND FOUND SUSPECT #2 PARKING BRAKE PRESSURE SWITCH INOP. R/R #2 PARKING BRAKE PRESSURE SWITH IAW E175 AMM 32-44-09, OPS CKS AND LEAK CKS GOOD.