B2463 – Auxiliary Heater Overheat Fault

B2463 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

B2463 Possible Causes

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

B2463 Description

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