Two catalytic converters are used on the 2007 Honda Odyssey, forming a dual-cat exhaust system common for this model year to meet emissions standards.
In practical terms, most 2007 Odysseys with the 3.5-liter V6 (J35A) employ one catalytic converter mounted close to the engine and a second downstream converter along the exhaust path toward the rear of the vehicle. This arrangement improves catalytic efficiency across operating conditions and helps satisfy both federal and California emission requirements.
Dual-cat design: locations and purpose
To map out the setup, here are the two catalytic converters and what they do in the Odyssey's exhaust system:
Notes: Configurations can vary by market and trim; this description reflects typical North American specifications for 2007 Odyssey models.
- Close-coupled catalytic converter: installed near the exhaust manifold, this converter begins reducing pollutants almost immediately after combustion and helps lower emissions during cold starts.
- Secondary (downstream) catalytic converter: located further back along the exhaust line, typically before the mid-pipe or near the muffler, providing additional emissions reduction and helping the system meet overall regulatory standards.
These converters work with the vehicle's oxygen sensors to monitor and adjust the air-fuel mix, ensuring the catalytic system operates efficiently across driving conditions.
Why Honda uses two catalytic converters
The two-cat design increases overall catalytic efficiency and helps the Odyssey meet stricter emissions limits in some markets, while also providing redundancy and optimizing performance during various engine loads and temperatures.
Maintenance and replacement considerations
When servicing or replacing parts, you’ll typically encounter two separate catalytic converter units in the exhaust system, each with its own mounting points and connected sensors. OEM replacements are available for both stages, and some aftermarket catalogs offer complete two-cat assemblies or individual units.
Summary
The 2007 Honda Odyssey uses two catalytic converters as part of a dual-cat exhaust setup. This configuration is standard for most U.S. and North American models of that year, balancing emissions control with engine performance. If you’re checking or replacing components, locate the two converters along the exhaust path: one near the engine, one farther back before the muffler.
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 |
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What are the most common problems with a 2007 Honda Odyssey?
Owner Reported Trouble Spots
- Climate System. AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
- Engine Minor.
- Suspension/Steering.
- Body Hardware.
- Exhaust.
- Paint/Trim.
- Engine Cooling.
- Brakes.
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How much is a catalytic converter for a 2007 Honda Odyssey?
The average price for a 2007 Honda Odyssey Catalytic Converter at Advance Auto Parts is around $425.69, with a range that starts at $5.89 and goes up to $1,150.99.
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How many catalytic converters are on a 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.
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