Powertrain
generic / SAE
P0403
EGR Control Circuit
The control circuit for the EGR valve solenoid is open or shorted. The ECM cannot drive the valve to the commanded position.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / 03
Possible causes
- EGR solenoid winding defective high
- Wiring or connector fault medium
- ECM driver stage damaged low
Symptoms
- Check engine light on
- Pinging or knocking under load
- Power loss and hesitation
- Possible rough idle
- Failed emissions inspection (NOx)
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–600 €
- Estimated time: 0.5–2.5 h
- Component: egr valve
- Component: egr solenoid
- Component: solenoid wiring
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012