The 2017 Honda Accord generally uses two catalytic converters in its exhaust system.
Understanding the exhaust layout
The Accord's exhaust system is designed to meet emissions and performance standards, with two catalytic converters arranged along the path: one close to the engine and a second farther back. The exact layout varies by engine choice and market or trim, but two converters is the common baseline.
Common layouts you’ll encounter in service documentation:
- 2.4L inline-4 (non-hybrid): two catalytic converters — a close-coupled cat near the manifold and a downstream cat further back in the exhaust stream.
- 3.5L V6: two catalytic converters in the exhaust path, typically arranged to service both banks; one near the engine and a second downstream.
- Hybrid version (2.0L-based hybrid): two catalytic converters integrated with the hybrid exhaust routing to manage emissions from both the engine and the electric drive system.
Conclusion: Across the common 2017 Accord configurations, two catalytic converters are used in the exhaust system, with placement adapting to the engine and market.
Maintenance considerations and symptoms
Keeping those converters in good condition is important for emissions compliance and performance. If a converter fails or becomes clogged, it can trigger diagnostic trouble codes, reduce power, and raise emissions readings.
- Reduced engine performance and fuel economy
- Check engine light with relevant codes (e.g., P0420, P0430, or related EMISS/oxygen sensor codes)
- Rattling sounds from under the car or unusual exhaust vibrations
- Failed emissions test or dealership inspection
If you notice these signs, have a qualified mechanic inspect the exhaust system to confirm whether a catalytic converter needs replacement, as other issues can mimic catalytic problems.
How to confirm the exact count on your car
For specific VIN-based configurations, consult the vehicle’s owner’s manual, service bulletin, or a Honda dealership. A parts diagram or service manual will show the exact number and placement of catalysts for your model year and trim.
Summary
The typical 2017 Honda Accord uses two catalytic converters in its exhaust system across most configurations, including the 2.4L I4, 3.5L V6, and hybrid variants. Exact placement can vary by engine, trim, and market, so checking the service documentation for your VIN is the best way to confirm.
What is the most common problem with the 2017 Honda Accord?
Top 2017 Honda Accord Problems
- "No Start" Due to Ignition Switch Failure.
- Radio/Climate Control Display May Go Dark.
- Faulty Door Lock Actuator May Cause Power Door Locks to Activate Intermittently.
- Warped Front Brake Rotors May Cause Vibration When Braking.
- Air Conditioning Blowing Warm Air.
How many catalytic converters does the Honda Accord have?
All 3 Catalytic Converters For 2013-2017 Honda Accord 3.5L With Flex.
How do I know if my Honda has a bad catalytic converter?
6 Signs Your Honda Needs a New Catalytic Converter
- Your Gas Mileage Is Dropping.
- Your Engine's Losing Power.
- Your Car Starts Misfiring.
- Your Tailpipe Emits Black Smoke.
- You Catch an Unpleasant Smell.
- You Can Hear Your Cat Rattling.
How much is a new catalytic converter for a 2017 Honda Accord?
The range of prices of Catalytic Converters for the 2017 Honda Accord goes from $179.99 up to $755.99 for the most premium parts.