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

DIAGNOSTIC TROUBLE CODE CHART ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC) MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX

DTC EATC (On Demand) Self-Test Faults EATC (Continuous) Run-Time Faults Description Action to Take
B2266 024 025 Blend door failure or short Go To PINPOINT TEST A: DTC B2266 - BLEND DOOR FAILURE OR SHORT .
B1251 031 N/A A/C in-car temperature sensor open circuit Go To PINPOINT TEST B: DTC B1251 OR DTC1253 - A/C IN-CAR TEMPERATURE SENSOR OPEN CIRCUIT OR SHORT TO GROUND .
B1253 030 N/A A/C in-car temperature sensor short to ground Go To PINPOINT TEST B: DTC B1251 OR DTC1253 - A/C IN-CAR TEMPERATURE SENSOR OPEN CIRCUIT OR SHORT TO GROUND .
B1255 041 043 A/C ambient temperature sensor open circuit Go To PINPOINT TEST C: DTC B1255 OR DTC B1257 - A/C AMBIENT TEMPERATURE SENSOR OPEN CIRCUIT OR SHORT TO GROUND .
B1257 040 042 A/C ambient temperature sensor short to ground Go To PINPOINT TEST C: DTC B1255 OR DTC B1257 - A/C AMBIENT TEMPERATURE SENSOR OPEN CIRCUIT OR SHORT TO GROUND .
B1259 N/A N/A A/C solar radiation sensor circuit open Go To PINPOINT TEST D: DTC B1259 OR DTC B1261 - SOLAR RADIATION SENSOR OPEN CIRCUIT OR SHORT TO GROUND .
B1261 050 052 A/C solar radiation sensor circuit short to ground Go To PINPOINT TEST D: DTC B1259 OR DTC B1261 - SOLAR RADIATION SENSOR OPEN CIRCUIT OR SHORT TO GROUND .
U1073 N/A - SCP invalid or missing data for engine coolant Refer to the INTRODUCTION article in ENGINE PERFORMANCE .
U1341 N/A N/A SCP invalid data for vehicle speed Refer to the INTRODUCTION article in ENGINE PERFORMANCE .