All error codes By model: T1100T1500T1700T2300T2500T610T730T830T930Z5200Z6Z6200Z9 Model T2300 Error Code 87:YZ Problem Description Problem with the Carriage Encoder Sensor readings Corrective Action Options check connection to Carriage PCA, visually inspect encoder for damage, Replace if needed. Clean encoder sensor, replace encoder sensor, repalce Carriage PCA Schedule Service Call ⭢ (301) 340-0000 Email ⭢ Contact Us