Climate Control Unit (2019 2020 2021)
Climate Control Unit
CLIMATE CONTROL UNIT DIAGNOSTIC CODE IDENTIFICATION (2019 2020 2021) (B121A-U128D)
| 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 | Climate control unit lost communication with touch control panel | 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 |
| B123F | Automatic lighting control unit/sunlight sensor error | 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 |
| U0180 | Climate control unit lost communication with automatic lighting control unit-sensor | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U128D | Lost communication with gauge control module | Loss of communication |