Climate Control System DTC Troubleshooting Index
| DTC | Detection Item or Symptom | ECU | DTC Type |
|---|---|---|---|
| U0180 | Lost communication with automatic lighting control unit/sensor | Climate control unit | Loss of communication |
| U1280 | Communication bus line error (BUS-OFF) | Climate control unit | Loss of communication |
| U1281 | Lost Communication with MICU (climate control unit) | 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 | Climate control unit | Loss of communication |
| U129B | Lost communication with seat heater control unit (second row seat) (climate control unit) Refer to: DTC Troubleshooting: U129B (With Auto Idle Stop System), or DTC Troubleshooting: U129B (Without Auto Idle Stop System) |
Climate control unit | Loss of communication |
| 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 |
| 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 |
| B1225 | An open in the in-car temperature sensor circuit | Climate control unit | Signal error |
| B1226 | A short in the in-car temperature sensor 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 (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 | Automatic lighting control unit/sensor internal error | Climate control unit | Internal 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 Refer to: DTC Troubleshooting: B2966 (With Auto Idle Stop System), or DTC Troubleshooting: B2966 (Without Auto Idle Stop System) |
Climate control unit | Loss of communication |
| B2967 | An open in the humidity sensor circuit | Climate control unit | Signal error |
| B2968 | A short in the humidity sensor circuit | Climate control unit | Signal error |
| B2969 | An open in the mode control motor A circuit (front) | Climate control unit | Signal error |
| 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 |
| B2979 | An open in the A/C pressure sensor circuit | Climate control unit | Signal error |
| B2980 | A short in the A/C pressure sensor 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 |
| B2988 | A problem in the A/C compressor variable capacity control solenoid circuit | Climate control unit | Signal error |