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P0640

Overview

Code

P0640

Code Type

P

Code Class

P0

System

Engine

Severity Level

Medium

Emissions Related

true

Drivability Impact

Major

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0640 indicates an issue with the intake air temperature sensor circuit

Symptoms

Poor engine performance; Check Engine Light

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Intake air temperature sensor

Possible Causes

Faulty intake air temperature sensor; Clogged air filter

Diagnostic Steps

1 Inspect intake air temperature sensor 2 Test sensor output

Drive Safety Notes

Inconsistent air intake can impair engine operation

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