DTC Troubleshooting Index
WARNING: This page is about a different car, the 2008 Acura TL and 2007 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
Checking the DTCs by HDS
DTC TROUBLESHOOTING CHART
| DTC | Detection Item or Symptom | ECU | DTC Type |
|---|---|---|---|
| B1202 | Climate control unit internal error | Climate control unit | Internal 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 | Climate control unit | Signal error |
| B1232 | A short in the evaporator temperature sensor circuit | Climate control unit | Signal error |
| B1233 | An Open in the driver's air mix control motor circuit | Climate control unit | Signal error |
| B1234 | A short in the driver's air mix control motor circuit | Climate control unit | Signal error |
| B1235 | A problem in the driver's air mix control 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 linkage, door, or motor | Climate control unit | Signal error |
| B1239 | An open or short in the driver's mode control motor circuit | Climate control unit | Signal error |
| B1240 | A problem in the driver's mode control linkage, doors, or motor | Climate control unit | Signal error |
| B1241 | A problem in the blower motor circuit | Climate control unit | Signal error |
| B1242 | An open or short in the passenger's mode control motor circuit | Climate control unit | Signal error |
| B1243 | A problem in the passenger's mode control linkage, doors, or motor | Climate control unit | Signal error |
| B1726 | Display panel control unit lost communication with the climate control unit | Display panel control unit, Climate control unit | Loss of communication |