EGR control electrical fault.
P0403 is a emissions fault code, typically costing £100–£500 to put right in a UK garage.
What causes P0403?
- Failed EGR solenoid
- Wiring
How P0403 is fixed
- Solenoid replacement
P0403 repair cost in the UK
Most P0403 repairs land between £100–£500 including parts and labour. The spread is wide because the cheap fix (a sensor, a hose, a leak) and the expensive fix (a major component) throw the same code — which is why a proper diagnosis before parts are bought saves the most money.
Can you drive with P0403?
Drivable.
Urgency: medium.