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P0409

Overview

Code

P0409

Code Type

P

Code Class

P0

System

Emissions

Severity Level

Medium

Emissions Related

true

Drivability Impact

Minor

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0409 indicates a malfunction in the EGR sensor circuit

Symptoms

Check Engine Light; Engine shaking

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

EGR sensor feedback

Possible Causes

Wiring fault

Diagnostic Steps

1 Inspect EGR wiring 2 Test EGR sensor

Drive Safety Notes

Reduced emissions control

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