You are offline — AutoTools still works from your device.

Code

P0403

Emissions / EGR

خلل دائرة صمام EGR

دائرة أمر EGR بها خلل.

Search another code

Most likely causes

صمام تالف
سلك تالف

Symptoms you may notice

Check engine light
Rough idle
Spark knock

Checks to run

Test the EGR valve command
Check wiring and fuse
Inspect for carbon

Tools you may need

Multimeter OBD-II scanner

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Emissions / EGR

تدفق EGR غير كافٍ

إشارة حساس موضع EGR منخفضة

خلل تدفق EGR

صمام EGR — مدى / أداء

Ask the AI mechanic

Hi! Ask me anything about your car — codes, noises, parts, maintenance.