Powertrain
generic / SAE
P00E3
Exhaust Heat Exchanger Exhaust Bypass Valve A Stuck Open
The exhaust heat exchanger bypass valve A is stuck open. Engine warms up too slowly because exhaust does not heat the heat exchanger.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / E3
Possible causes
- Valve stuck open by carbon high
- Carbon or debris buildup preventing free movement low
- Component wear with age - mechanical play low
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 2–6 h
- Component: exhaust bypass valve a
- Component: heat exchanger
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012