B16B4 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B16B4 – Right Stop Lamp Control Circuit Low

 

B16B4 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B16B4 Possible Causes

 

Faulty Right Stop Lamp,Right Stop Lamp harness is open or shorted,Right Stop Lamp circuit poor electrical connection,Faulty Body Control Module (BCM)

 

B16B4 Description

 

The Body Control Module (BCM) receives a hardwired brake signal from the Anti-lock Brake System (ABS) module indicating that the Brake Pedal is applied. When this signal is received, the BCM provides a voltage output through the rear stop signal control circuit. For additional information on the Brake Lamp operation. When the Body Control Module (BCM) detects a low or high condition on the Right Stop Lamp Driver circuit and sets the Diagnostic Trouble Code (DTC).