B14B4 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B14B4 – Passenger Seat Heater Thermistor Circuit Short Circuit

 

B14B4 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B14B4 Possible Causes

 

Faulty Passenger Seat Heater Module,Passenger Seat Heater Module harness is open or shorted,Passenger Seat Heater Module circuit poor electrical connection,Faulty Air Condition (A/C) Control Module

 

B14B4 Description

 

The Air Condition (A/C) Control Module monitors the Passenger Seat Heater Thermistor. The A/C Control Module sets the OBDII code when the Passenger Seat Heater Thermistor is not to factory specifications.