B2425 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B2425 – Driver Seat Heater Circuit

 

B2425 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B2425 Possible Causes

 

Faulty Driver Seat Heater,Driver Seat Heater harness is open or shorted,Driver Seat Heater circuit poor electrical connection,Faulty Driver Seat Module (DSM)

 

B2425 Description

 

The Driver and Passenger Seat Heaters are controlled by the Driver Seat Module (DSM). Power is supplied to the driver seat cushion and back heater elements through individual voltage supply circuits. Power is supplied to the passenger seat cushion and back heater elements through a common voltage supply circuit. All of the driver and passenger seat heater elements are grounded by the DSM through individual low side drive control circuits. The heater element control circuits are pulse width modulated to ground by the DSM in order to control the seat temperatures by regulating the current flow through the heater elements.