Climate Control System DTC Troubleshooting Index (Climate Control)
| DTC | Detection Item or Symptom | ECU | DTC Type |
|---|---|---|---|
| B1210 | Climate control unit internal error | Climate control unit | Signal error |
| B1213 | An open in the rear evaporator temperature sensor circuit | Climate control unit | Signal error |
| B1214 | A short in the rear evaporator temperature sensor circuit | Climate control unit | Signal error |
| B121D | Humidity/in-car temperature sensor communication error | Climate control unit | Loss of communication |
| B1220 | A short in the recirculation control motor circuit | Climate control unit | Signal error |
| B1221 | An open in the rear mode control motor circuit | Climate control unit | Signal error |
| B1222 | A short in the rear mode control motor circuit | Climate control unit | Signal error |
| B1223 | A problem in the rear blower 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 |
| B1231 | An open in the evaporator temperature sensor circuit (front) | Climate control unit | Signal error |
| B1232 | A short in the evaporator temperature sensor circuit (front) | Climate control unit | Signal error |
| B1233 | An open in the air mix control motor circuit (driver's) | Climate control unit | Signal error |
| B1234 | A short in the air mix control motor circuit (driver's) | Climate control unit | Signal error |
| B1235 | A problem in the air mix control motor circuit, linkage, door, or motor (driver's) | 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 |
| B123F - Refer to: DTC B123F (17)(With Automatic Wiper) () or DTC B123F (17)(Without Automatic Wiper) () | Automatic lighting control unit/sunlight sensor error | Climate control unit | Signal error |
| B1241 | A problem in the blower motor circuit (front) | Climate control unit | Signal error |
| B1244 | An open in the rear air mix control motor circuit | Climate control unit | Signal error |
| B1245 | A short in the rear air mix control motor circuit | Climate control unit | Signal error |
| B1246 | A problem in the rear air mix control motor circuit, linkage, door, or motor | Climate control unit | Signal error |
| B1248 | A problem in the rear mode control motor circuit, linkage, door, or motor | Climate control unit | Signal error |
| B2966 | Climate control unit lost communication with rear panel (rear climate control panel) | Climate control unit | Loss of communication |
| B2969 | An open in the mode control motor A circuit (front) | Climate control unit | Signal error |
*1: With second row seat heater
| DTC | Detection Item or Symptom | ECU | DTC Type |
|---|---|---|---|
| B2970 | A short in the mode control motor A circuit (front) | Climate control unit | Signal error |
| B2971 | A problem in the mode control motor A circuit, linkage, door, or motor (front) | Climate control unit | Signal error |
| B2972 | An open in the mode control motor B circuit (front) | Climate control unit | Signal error |
| B2973 | A short in the mode control motor B circuit (front) | Climate control unit | Signal error |
| B2974 | A problem in the mode control motor B circuit, linkage, door, or motor (front) | 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 |
| B2988 | A problem in the A/C compressor variable capacity control solenoid circuit | Climate control unit | Signal error |
| U1280 | Communication bus line error (BUS-OFF) | Climate control unit | Loss of communication |
| U1281 | Climate control unit lost communication with MICU (body control module) | Climate control unit | Loss of communication |
| U128D | Climate control unit lost communication with gauge control module | Climate control unit | Loss of communication |
| U1290 | Climate control unit lost communication with seat heater control unit (front) | Climate control unit | Loss of communication |
| U129B*1 | Climate control unit lost communication with seat heater control unit (second row seat) | Climate control unit | Loss of communication |
*1: With second row seat heater