B16A3 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B16A3 – Passenger Window Switch Backlighting Circuit Short

 

B16A3 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B16A3 Possible Causes

 

Faulty Passenger Window Switch,Passenger Window Switch harness is open or shorted,Passenger Window Switch circuit poor electrical connection,Faulty Passenger Door Module (PDM)

 

B16A3 Description

 

The Passenger Door Module (PDM) monitors the Passenger Window Switch Backlighting. The PDM sets the OBDII code when the Passenger Window Switch Illumination Driver circuit falls below 3.0 Volts for over 25 ms. or when the Passenger Window Switch Illumination Driver circuit current draw is greater than 120mA for over 2000 ms. and the switch illumination output is turned off or there is no current draw when the switch illumination is turned on.