As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R EMER EXIT CAS MESSAGE ILLUMINATED ON DECENT. STAYED ON TILL SHUT DOWN. REMOVED FAULTY LANDING GEAR ECU AND INSTALLED CUSTOMER SUPPLIED INSPECTED & TESTED PART IN REFERENCE TO GL 5500 AMM 32-31-09-000-801 AND 32-31-09-400-801. OPS CHECKS GOOD NO DEFECTS NOTED.