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Dual Electronic Automatic Temperature Control (DATC) Module Diagnostic Trouble Code (DTC) Index

DUAL ELECTRONIC AUTOMATIC TEMPERATURE CONTROL MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC Run-Time (Intermittent) Faults or Self-Test (Hard) Faults Description Action to Take
B1242 1242 Air flow recirculation door driver circuit failure Go To PINPOINT TEST C: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS .
B1251 1251 Air temperature internal sensor circuit open Go To PINPOINT TEST D: DTC B1251 OR B1253 - AIR TEMPERATURE INTERNAL SENSOR CIRCUIT OPEN OR SHORT TO GROUND .
B1253 1253 Air temperature internal sensor circuit short to ground Go To PINPOINT TEST D: DTC B1251 OR B1253 - AIR TEMPERATURE INTERNAL SENSOR CIRCUIT OPEN OR SHORT TO GROUND .
B1255 1255 Air temperature external sensor circuit open Go To PINPOINT TEST F: DTC B1255 OR B1257 - AIR TEMPERATURE EXTERNAL SENSOR CIRCUIT OPEN OR SHORT TO GROUND .
B1257 1257 Air temperature external sensor circuit short to ground Go To PINPOINT TEST F: DTC B1255 OR B1257 - AIR TEMPERATURE EXTERNAL SENSOR CIRCUIT OPEN OR SHORT TO GROUND .
B1259 1259 Solar radiation sensor circuit open Go To PINPOINT TEST G: DTC B1259 OR B1261 - SOLAR RADIATION SENSOR CIRCUIT OPEN OR SHORT TO GROUND .
B1261 1261 Solar radiation sensor circuit short to ground Go To PINPOINT TEST G: DTC B1259 OR B1261 - SOLAR RADIATION SENSOR CIRCUIT OPEN OR SHORT TO GROUND .
B1262 1262 Servo motor defrost circuit failure Go To PINPOINT TEST C: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS .
B1263 1263 Servo motor vent circuit failure Go To PINPOINT TEST C: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS .
B1264 1264 Servo motor floor circuit failure Go To PINPOINT TEST C: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS .
B1265 1265 Servo motor cold air bypass 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 1342 ECU is defective INSTALL a new DATC module.
B1676 1676 Battery voltage out of range REFER to GENERATORS & REGULATORS .
B1946 1946 Climate control A/C post evaporator sensor circuit failure Go To PINPOINT TEST E: DTC B1946, B1947, B1966, B1967, B2428, OR B2429 - CLIMATE CONTROL A/C POST EVAPORATOR SENSOR, A/C POST HEATER SENSOR PASSENGER SIDE CIRCUIT FAILURE OR SHORT TO GROUND .
B1947 1947 Climate control A/C post evaporator sensor circuit short to ground Go To PINPOINT TEST E: DTC B1946, B1947, B1966, B1967, B2428, OR B2429 - CLIMATE CONTROL A/C POST EVAPORATOR SENSOR, A/C POST HEATER SENSOR PASSENGER SIDE CIRCUIT FAILURE OR SHORT TO GROUND .
B1966 1966 A/C post heater sensor driver side circuit failure Go To PINPOINT TEST E: DTC B1946, B1947, B1966, B1967, B2428, OR B2429 - CLIMATE CONTROL A/C POST EVAPORATOR SENSOR, A/C POST HEATER SENSOR PASSENGER SIDE CIRCUIT FAILURE OR SHORT TO GROUND .
B1967 1967 A/C post heater sensor driver side circuit short to ground Go To PINPOINT TEST E: DTC B1946, B1947, B1966, B1967, B2428, OR B2429 - CLIMATE CONTROL A/C POST EVAPORATOR SENSOR, A/C POST HEATER SENSOR PASSENGER SIDE CIRCUIT FAILURE OR SHORT TO GROUND .
B2428 2428 A/C post heater sensor passenger side circuit failure Go To PINPOINT TEST E: DTC B1946, B1947, B1966, B1967, B2428, OR B2429 - CLIMATE CONTROL A/C POST EVAPORATOR SENSOR, A/C POST HEATER SENSOR PASSENGER SIDE CIRCUIT FAILURE OR SHORT TO GROUND .
B2429 2429 A/C post heater sensor passenger side circuit short to ground Go To PINPOINT TEST E: DTC B1946, B1947, B1966, B1967, B2428, OR B2429 - CLIMATE CONTROL A/C POST EVAPORATOR SENSOR, A/C POST HEATER SENSOR PASSENGER SIDE CIRCUIT FAILURE OR SHORT TO GROUND .
B2797 2797 Driver coolant control valve open circuit Go To PINPOINT TEST J: FULL HEAT ONLY IN ALL MODES .
B2798 2798 Driver coolant control valve circuit short to ground Go To PINPOINT TEST H: INSUFFICIENT, ERRATIC, OR NO HEAT .
B2799 2799 Passenger coolant control valve open circuit Go To PINPOINT TEST J: FULL HEAT ONLY IN ALL MODES .
B2800 2800 Passenger coolant control valve circuit short to ground Go To PINPOINT TEST H: INSUFFICIENT, ERRATIC, OR NO HEAT .
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