B2466 Code: Meaning, Causes, and Symptoms | OBD2 Codes
B2466 – Auxiliary Heater Overheat Counter Overrun/System Locked
B2466 Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
B2466 Possible Causes
Faulty Auxiliary Heater,Auxiliary Heater harness is open or shorted,Auxiliary Heater circuit poor electrical connection
The Powertrain Control Module (PCM) monitors the Auxiliary Heater. The PCM sets the OBDII code when the Auxiliary Heater is not to factory specifications.