The catalytic converter is typically located along the exhaust system under the vehicle, usually just behind the engine, between the exhaust manifold and the muffler. Some engines use a pre-cat near the manifold, and certain configurations may include a second catalytic converter further back.
Location can vary by generation and engine type. In older Accords, a single converter is commonly mounted on the exhaust pipe after the manifold. In newer models and some markets, you may encounter a secondary catalytic converter downstream toward the rear, or a two-cat setup with a pre-cat near the manifold and a main cat farther back. For precise placement, consult the owner's manual or a factory service manual for your exact year and engine code, as the exhaust layout changes across generations.
Common placements on Honda Accords
The following describes typical spots you’ll find the catalytic converter, depending on the model year and engine configuration.
- Primary catalytic converter located near the engine, often mounted on or just downstream of the exhaust manifold as part of the front exhaust pipe.
- Main catalytic converter placed further back along the exhaust path, usually before the resonator or muffler in many configurations.
- Some engines use two catalytic converters: a pre-cat close to the manifold and a second converter downstream along the exhaust route.
In short, the converter sits along the exhaust route under the car, with the exact spot determined by engine type and generation. Always confirm with model-specific documentation.
How to locate and inspect the converter safely
Before attempting any inspection, ensure the car is parked on a flat surface, the engine is off, and the exhaust is cool. Use proper safety gear and support the vehicle if you need to raise it.
- Look under the vehicle along the centerline of the exhaust system, starting from the exhaust manifold area beneath the engine compartment.
- Identify metal canisters with inlet and outlet pipes on the exhaust line; catalytic converters are typically larger and may have a heat shield.
- Note any oxygen sensors threaded into or near the converter housing, which help confirm its location within the exhaust system.
- Refer to the owner’s manual or repair guide for exact mounting points and torque specifications if you plan removal or replacement.
Inspecting the converter should be done with caution; if you suspect a problem (rough rattling, reduced performance, or an illuminated check engine light related to emissions), consult a qualified mechanic for diagnosis and service.
Summary
For a Honda Accord, the catalytic converter is normally located along the underside exhaust path, with the primary unit near the engine and, in some models, a secondary converter further back. Exact placement varies by generation and engine, so model-specific manuals are the best reference for precise location and service procedures.