Technical Definition:

Intake Air Heater Control Circuit

Trouble Code: P0640
Address: 0x0640
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits
Technical Description:

Possible Causes:

Possible Symptoms:

Manifold Intake Air Heater

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Intake Air Heater
– Intake Air Heater harness is open or shorted
– Intake Air Heater circuit poor electrical connection

Specific Makes:

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