DTC Troubleshooting Index
WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. 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 |
|---|---|---|---|
| B1200 | Communication bus line error (bus-off) | Climate control unit | Loss of communication |
| B1202 | Climate control unit internal error | Climate control unit | Internal error |
| B1205 | Climate control unit lost communication with gauge control module (VSP/NE message) | Climate control unit | Loss of communication |
| B1206 | Climate control unit lost communication with gauge control module (ECT message) | Climate control unit | Loss of communication |
| B1207 | Climate control unit lost communication with gauge control module (ILLUMI message) | 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 |
| B1215 | An open or short in the recirculation 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 front evaporator temperature sensor circuit | Climate control unit | Signal error |
| B1232 | A short in the front 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 circuit | 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 circuit | Climate control unit | Signal error |
| B1239 | An open or short in the front mode control motor circuit | Climate control unit | Signal error |
| B1240 | A problem in the front mode control linkage, doors, or motor circuit | Climate control unit | Signal error |
| B1241 | A problem in the front blower motor circuit | 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 linkage, door, or motor circuit | Climate control unit | Signal error |
| B2965 | Climate control unit lost communication with rear climate control panel | 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 | Climate control unit lost communication with combination switch control unit (WIPSW message) | Climate control unit | Loss of communication |
| B2970 | Climate control unit lost communication with relay control module (RM message) | Climate control unit | Loss of communication |
| 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 |
| B2981 | Climate control unit lost communication with navigation unit | Climate control unit | Loss of communication |
| B2983 | A problem in the recirculation control linkage, door, or motor circuit | Climate control unit | Signal error |
| B2991 | Climate control unit lost communication with audio unit | Climate control unit | Loss of communication |