P0640 Ford

Ford P0640 OBD-II Trouble Code Definition:

P0640 Manifold Intake Air Heater

P0640 Ford OBD-II Trouble CodeDescription:

OBD Trouble Code P0640
Intake Air Heater Control Circuit
What does the code mean? OBD-ii Code P0640 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 Sumptoms of OBD code P0640
– Engine Light ON (or Service Engine Soon Warning Light)
Causes Causes of the OBD-II code P0640
– Intake Air Heater circuit – Faulty Intake Air Heater