A/C-Heater Systems DTCS
A/C-HEATER SYSTEMS DUAL ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (DATC) MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Perform Test |
|---|---|---|
| B1242 | Recirculation door actuator circuit failure | Go to PINPOINT TEST C: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B1251 | In-vehicle temperature sensor circuit open | Go to PINPOINT TEST D: DTC B1251 OR DTC 1253 - A/C IN-VEHICLE TEMPERATURE SENSOR OPEN CIRCUIT OR SHORT TO GROUND . |
| B1253 | In-vehicle temperature sensor circuit short to ground | Go to PINPOINT TEST D: DTC B1251 OR DTC 1253 - A/C IN-VEHICLE TEMPERATURE SENSOR OPEN CIRCUIT OR SHORT TO GROUND . |
| B1255 | Ambient air temperature sensor open | Go to PINPOINT TEST F: DTC B1255 OR DTC B1257 - A/C AMBIENT TEMPERATURE SENSOR OPEN CIRCUIT OR SHORT TO GROUND . |
| B1257 | Ambient air temperature sensor short to ground | Go to PINPOINT TEST F: DTC B1255 OR DTC B1257 - A/C AMBIENT TEMPERATURE SENSOR OPEN CIRCUIT OR SHORT TO GROUND . |
| B1259 | A/C solar radiation sensor open circuit | Go to PINPOINT TEST G: DTC B1259 OR DTC B1261 - SOLAR RADIATION SENSOR OPEN CIRCUIT OR SHORT TO GROUND . |
| B1261 | A/C solar radiation sensor circuit short to ground | Go to PINPOINT TEST G: DTC B1259 OR DTC B1261 - SOLAR RADIATION SENSOR OPEN CIRCUIT OR SHORT TO GROUND . |
| B1262 | Defrost door actuator circuit failure | Go to PINPOINT TEST C: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B1263 | Panel door actuator circuit failure | Go to PINPOINT TEST C: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B1264 | Floor door actuator circuit failure | Go to PINPOINT TEST C: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B1265 | Cold air bypass door actuator circuit failure | INSPECT the vehicle for the presence of a cold air bypass door actuator. If a cold air bypass actuator is present, Go to PINPOINT TEST C: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . If a cold air bypass door actuator is not present, ignore DTC B1265. |
| B1342 | ECU defective | INSTALL a new DATC module. |
| B1946 | Evaporator discharge temperature sensor open circuit | Go to PINPOINT TEST E: EVAPORATOR OR HEATER CORE DISCHARGE AIR TEMPERATURE SENSOR CIRCUIT OPEN OR SHORT TO GROUND . |
| B1947 | Evaporator discharge temperature sensor circuit short to ground | Go to PINPOINT TEST E: EVAPORATOR OR HEATER CORE DISCHARGE AIR TEMPERATURE SENSOR CIRCUIT OPEN OR SHORT TO GROUND . |
| B1966 | Driver heater core discharge temperature sensor open circuit | Go to PINPOINT TEST E: EVAPORATOR OR HEATER CORE DISCHARGE AIR TEMPERATURE SENSOR CIRCUIT OPEN OR SHORT TO GROUND . |
| B1967 | Driver heater core discharge temperature sensor short circuit | Go to PINPOINT TEST E: EVAPORATOR OR HEATER CORE DISCHARGE AIR TEMPERATURE SENSOR CIRCUIT OPEN OR SHORT TO GROUND . |
| B2428 | Passenger heater core discharge temperature sensor open circuit | Go to PINPOINT TEST E: EVAPORATOR OR HEATER CORE DISCHARGE AIR TEMPERATURE SENSOR CIRCUIT OPEN OR SHORT TO GROUND . |
| B2429 | Passenger heater core discharge temperature sensor short circuit | Go to PINPOINT TEST E: EVAPORATOR OR HEATER CORE DISCHARGE AIR TEMPERATURE SENSOR CIRCUIT OPEN OR SHORT TO GROUND . |
| B2477 | Module configuration failure | RECONFIGURE the DATC module. |
| B2797 | Driver coolant control valve open circuit | Go to PINPOINT TEST J: FULL HEAT ONLY IN ALL MODES . |
| B2798 | Driver coolant control valve circuit short to ground | Go to PINPOINT TEST H: INSUFFICIENT, ERRATIC OR NO HEAT . |
| B2799 | Passenger coolant control valve open circuit | Go to PINPOINT TEST J: FULL HEAT ONLY IN ALL MODES . |
| B2800 | Passenger coolant control valve circuit short to ground | Go to PINPOINT TEST H: INSUFFICIENT, ERRATIC OR NO HEAT . |
| U1178 | SCP invalid or missing data for voice command | This code will only appear if the vehicle is equipped with voice command. |