Heating/Air Conditioning DTCS
HEATING/AIR CONDITIONING DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description | DTC Type |
|---|---|---|
| B1220 | A short in the recirculation control motor circuit | Signal error |
| B1221 | An open in the rear mode control motor circuit | Signal error |
| B1222 | A short in the rear mode control motor circuit | Signal error |
| B1223 | A problem in the rear blower motor circuit | Signal error |
| B1231 | An open in the evaporator temperature sensor circuit (front) | Signal error |
| B1232 | A short in the evaporator temperature sensor circuit (front) | Signal error |
| B1233 | An open in the air mix control motor circuit (front) | Signal error |
| B1234 | A short in the air mix control motor circuit (front) | Signal error |
| B1235 | A problem in the air mix control motor circuit, linkage, door, or motor (front) | Signal error |
| B1241 | A problem in the blower motor circuit (front) | Signal error |
| B1244 | An open in the rear air mix control motor circuit | Signal error |
| B1245 | A short in the rear air mix control motor circuit | Signal error |
| B1246 | A problem in the rear air mix control motor circuit, linkage, door, or motor | Signal error |
| B1248 | A problem in the rear mode control motor circuit, linkage, door, or motor | Signal error |
| B2969 | An open in the mode control motor A circuit (front) | Signal error |
| B2970 | A short in the mode control motor A circuit (front) | Signal error |
| B2971 | A problem in the mode control motor A circuit, linkage, door, or motor (front) | Signal error |
| B2972 | An open in the mode control motor B circuit (front) | Signal error |
| B2973 | A short in the mode control motor B circuit (front) | Signal error |
| B2974 | A problem in the mode control motor B circuit, linkage, door, or motor (front) | Signal error |
| B2979 | An open in the A/C pressure sensor circuit | Signal error |
| B2980 | A short in the A/C pressure sensor circuit | Signal error |
| B2983 | A problem in the recirculation control motor circuit, linkage, door, or motor | Signal error |
| B2986 | An open in the recirculation control motor circuit | Signal error |
| U1280 | Communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Lost Communication with MICU (HVAC control unit) | Loss of communication |
| U128D | Lost communication with gauge control module (HVAC control unit) | Loss of communication |