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Climate Control System DTCS (2016 2017 2018)

CLIMATE CONTROL SYSTEM DIAGNOSTIC CODE IDENTIFICATION (2016 2017 2018)

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