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A/C-Heater Systems DTCS

DUAL ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (DATC) MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Perform Test
B1242 Air inlet 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 D: DTC B1251 OR DTC 1253 -- A/C IN-VEHICLE 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 door 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: DTC B1946, B1947, B1966, B1967, B2428 OR B2429 -- 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: DTC B1946, B1947, B1966, B1967, B2428 OR B2429 -- 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: DTC B1946, B1947, B1966, B1967, B2428 OR B2429 -- 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: DTC B1946, B1947, B1966, B1967, B2428 OR B2429 -- 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: DTC B1946, B1947, B1966, B1967, B2428 OR B2429 -- 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: DTC B1946, B1947, B1966, B1967, B2428 OR B2429 -- 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.