OBD-II Trouble Code Description for P0640 Dodge

Intake Air Heater Control Circuit

What does this mean?

OBD2 Code P0640 Dodge definition:
The intake air (IA) heater is located in the air inlet tube and is used to warm the incoming air to aid in starting the engine and for proper cylinder combustion. The glow plug control module (GPCM) will command the IA heater ON when the engine coolant temperature is below 40 C (104 F). The power to the IA heater is supplied by the battery positive voltage circuit.

Symptoms

Possible sumptoms of OBD code P0640 Dodge
– Engine Light ON (or Service Engine Soon Warning Light)

Causes

Possible causes of OBD code P0640 Dodge
– Intake Air Heater circuit – Faulty Intake Air Heater

Possible Solutions