top of page

P0403

Overview

Code

P0403

Code Type

P

Code Class

P0

System

Engine

Severity Level

Low

Emissions Related

true

Drivability Impact

None

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0403 indicates a malfunction in the EGR control circuit

Symptoms

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

EGR valve electrical control

Possible Causes

Faulty EGR solenoid

Diagnostic Steps

1 Test EGR solenoid resistance; 2 Inspect wiring

Drive Safety Notes

Emissions control affected

bottom of page