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.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Exhaust bypass valve a
- Heat exchanger
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Valve stuck open by carbon
- Carbon or debris buildup preventing free movement
- Component wear with age - mechanical play
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.