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P0492

Overview

Code

P0492

Code Type

P

Code Class

P0

System

Emissions

Severity Level

Medium

Emissions Related

true

Drivability Impact

Major

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0492 indicates insufficient EGR flow detected in the exhaust system (Bank 2)

Symptoms

Rough idle; Engine hesitation

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 valve and exhaust system

Possible Causes

Blocked EGR passages; Malfunctioning EGR solenoid

Diagnostic Steps

1 Inspect EGR valve 2 Perform EGR valve test

Drive Safety Notes

Increased emissions risk

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