B2454 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B2454 – Auxiliary Heater Blower Fan Circuit Open

 

B2454 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B2454 Possible Causes

 

Faulty Auxiliary Heater Blower Fan,Auxiliary Heater Blower Fan harness is open or shorted,Auxiliary Heater Blower Fan circuit poor electrical connection

 

B2454 Description

 

The Powertrain Control Module (PCM) monitors the Auxiliary Heater Blower Fan. The PCM sets the OBDII code when the Auxiliary Heater Blower Fan is not to factory specifications.