B1949 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1949 – Climate Control Water Temperature Sensor Circuit Short To Ground

 

B1949 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1949 Possible Causes

 

Faulty Climate Control Water Temperature Sensor,Climate Control Water Temperature Sensor harness is open or shorted,Climate Control Water Temperature Sensor circuit poor electrical connection,Faulty Dual Automatic Temperature Control (DATC)

 

B1949 Description

 

The Dual Automatic Temperature Control (DATC) Module monitors the Climate Control Water Temperature Sensor. The DATC sets the OBDII code when the Climate Control Water Temperature Sensor is not to factory specifications.