DTC Troubleshooting Index
WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
CHECKING DTCS WITH HDS
| DTC | Detection Item or Symptom | ECU | DTC type |
|---|---|---|---|
| B1200 | Communication circuit 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 (coolant temp message) | Climate control unit | Loss of communication |
| B1207 | Climate control unit lost communication with gauge control module (illumination 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 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 |
CHECKING DTCS WITH HDS
| DTC | Detection Item or Symptom | ECU | DTC type |
|---|---|---|---|
| B1239 | An open or short in the mode control motor circuit (front) | Climate control unit | Signal error |
| B1240 | A problem in the mode control motor circuit, linkage, doors, or motor (front) | 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 motor circuit, linkage, door, or motor | Climate control unit | Signal error |
| B2965 | Rear communication failure | 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 MICU (WIPSW message) | Climate control unit | Loss of communication |
| B2970 | Climate control unit lost communication with gauge control unit (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 |
| B2983 | A problem in the recirculation control motor circuit, linkage, door, or motor | Climate control unit | Signal error |
| B2991 | Climate control unit lost communication with audio system | Climate control unit | Loss of communication |