Powertrain
generic / SAE
P23E5
EGR C Control Stuck Open
EGR valve C is stuck in the open position - exhaust gas continuously dilutes intake air, reducing power and risking misfires at idle.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number3 / E5
Possible causes
- Valve stuck open high
- Carbon or debris buildup preventing free movement low
- Component wear with age - mechanical play 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: 300–1500 €
- Estimated time: 1.5–5 h
- Component: egr valve c
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012