Two catalytic converters. The 2011 Honda Odyssey typically uses a dual-cat exhaust system with one converter close to the engine and a second converter further downstream in the exhaust path.
While this two-cat layout is standard for many US-spec models of this year, configurations can vary by market or trim. The article below explains the layout and where the converters are typically located, along with notes on maintenance and replacement considerations.
What is a catalytic converter and why it matters
A catalytic converter is part of a vehicle’s emissions control system. It uses a ceramic substrate coated with catalysts (usually platinum, palladium, and rhodium) to convert harmful exhaust pollutants into less harmful gases before they leave the tailpipe. For the 2011 Odyssey, the two-converter setup helps achieve emissions targets across a wide range of operating conditions and speeds.
Two-converter layout in the 2011 Odyssey
The arrangement for most 2011 Odysseys features two catalytic converters in series along the exhaust path: one positioned close to the engine (close-coupled) and a second further downstream. This is typical for Honda’s V6 minivan lineup from that era and aids rapid light-off and overall emissions performance.
Two-converter overview
Before listing the two converters, here is a concise summary of their typical locations and roles.
- Close-coupled catalytic converter: mounted near the exhaust manifold for fast warm-up and early reduction of emissions.
- Main downstream catalytic converter: located further back along the exhaust route to further treat exhaust gases before they exit the vehicle.
In US-spec 2011 Odysseys, two catalytic converters are standard. If you’re diagnosing issues or sourcing replacements, verify the exact configuration using your VIN-specific service literature or an OEM parts catalog, since regional emissions rules or aftermarket changes can affect the setup.
Variations and maintenance considerations
Regional emission standards, trim levels, or aftermarket exhaust systems can alter the exact arrangement. Always consult the factory service manual or a certified mechanic for VIN-specific guidance when inspecting, replacing, or diagnosing catalysts.
Summary
Key takeaway: The 2011 Honda Odyssey generally uses two catalytic converters in its exhaust system—one close to the engine and one downstream. This dual-cat configuration aligns with Honda’s emissions strategy for the model year and is typical for US-spec examples.
Summary: For most owners, two catalytic converters is the correct count. Always verify with VIN-specific documentation when doing maintenance or part replacement.
How many catalytic converters are on a 2011 Honda Odyssey?
three catalytic converters
Your 2005-2011 Honda Odyssey has a V6 engine with three catalytic converters. Two are part of the exhaust manifold, close to the engine (one front, one rear), and a third is located underneath the van.
How much does a catalytic converter cost for a 2011 Honda Odyssey?
The range of prices of Catalytic Converters for the 2011 Honda Odyssey goes from $197.99 up to $1,358.00 for the most premium parts.
Where is the bank 2 catalytic converter on a Honda Odyssey?
radiator
The 3.5L V6 engine in your Odyssey has three converters. The front converter (Bank 2) is near the radiator, the rear converter (Bank 1) is against the firewall, and the third is under the van.
How much does it cost to fix P0420 on a Honda?
Most Common Causes of P0420 Code
| Cause | Typical Repair Cost (USD) |
|---|---|
| Failing catalytic converter | $500-$2,500 |
| Faulty oxygen sensor (upstream or downstream) | $150-$400 |
| Exhaust leaks (manifold, pipes) | $100-$600 |
| Engine misfire (spark plugs, coils) | $100-$500 |