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Home >> Honda >> 2021 >> HR-V EX, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Network Communication - Testing & Troubleshooting >> DTC Troubleshooting Index >> Network Communication DTC Troubleshooting Index (2016 2017 2018) >> Climate Control Unit
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Climate Control Unit

DTC Description DTC type
B121A An open in the mode control motor circuit Signal error
B121B A short in the mode control motor circuit Signal error
B121D Humidity/in-car temperature sensor communication error Loss of communication
B121E Electric capacity type switch IC communication error Signal error
B1220 A short in the recirculation control motor circuit Signal error
B1227 An open in the outside air temperature sensor circuit Signal error
B1228 A short in the outside air temperature sensor circuit Signal error
B1229 An open in the sunlight sensor circuit Signal error
B1230 A short in the sunlight sensor circuit Signal error
B1231 An open in the evaporator temperature sensor circuit Signal error
B1232 A short in the evaporator temperature sensor circuit Signal error
B1233 An open in the air mix control motor circuit Signal error
B1234 A short in the air mix control motor circuit Signal error
B1235 A problem in the air mix control motor circuit, linkage, door, or motor Signal error
B1236 An open in the passenger's air mix control motor circuit Signal error
B1237 A short in the passenger's air mix control motor circuit Signal error
B1238 A problem in the passenger's air mix control motor circuit, linkage, door, or motor Signal error
B1240 A problem in the mode control motor circuit, linkage, door, or motor Signal error
B1241 A problem in the blower motor circuit Signal error
B2983 A problem in the recirculation control motor circuit, linkage, door, or motor Signal error
B2986 An open in the recirculation control motor circuit Signal error
U1280 Communication bus line error (BUS-OFF) Loss of communication
U128D Lost communication with gauge control module Loss of communication