B1856 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1856 – Climate Control Air Temperature Internal Sensor Motor Circuit Short To Ground

 

B1856 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1856 Possible Causes

 

Faulty Climate Control Air Temperature Internal Sensor Motor,Climate Control Air Temperature Internal Sensor Motor harness is open or shorted,Climate Control Air Temperature Internal Sensor Motor circuit poor electrical connection,Faulty Body Control Module (BCM)

 

B1856 Description

 

The Body Control Module (BCM) monitors the Climate Control Air Temperature Internal Sensor Motor. The BCM sets the OBDII code when the Climate Control Air Temperature Internal Sensor Motor is not to factory specifications.