B1844 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1844 – Phone Handset Circuit Failure

 

B1844 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1844 Possible Causes

 

Faulty Phone Handset,Phone Handset harness is open or shorted,Phone Handset circuit poor electrical connection,Faulty Body Control Module (BCM)

 

B1844 Description

 

The Body Control Module (BCM) monitors the Phone Handset. The BCM sets the OBDII code when the Phone Handset is not to factory specifications.