The 2014 Nissan Rogue uses two catalytic converters in its exhaust system.
For the Rogue's 2.5-liter QR25DE engine, Nissan configured a dual-cat setup: a close-coupled catalytic converter near the engine and a second catalytic converter further downstream in the exhaust path. This arrangement helps meet emissions standards for that model year while maintaining engine performance.
Where they are and how they function
Before examining the locations, it’s useful to know the general arrangement and purpose of the two catalysts:
- Close-coupled catalytic converter near the exhaust manifold
- Secondary catalytic converter located further downstream along the exhaust pipe, typically before the rear resonator/muffler
The two converters operate in series to maximize emissions reduction; the close-coupled cat heats quickly to begin the catalytic process, and the second cat provides additional conversion efficiency as exhaust gas temperature drops along the exhaust path.
Notes for owners and technicians
When servicing, use Nissan-approved replacement parts and observe proper mounting and sensor placements, since each converter has associated oxygen sensors and heat shields. Confirm with the service manual or a dealer for exact part numbers for your vehicle's VIN, as configurations can vary slightly by market or trim.
Additional considerations
Because catalytic converters contain precious metals, they can be targets for theft. If you experience symptoms like reduced performance, hard starting, or check-engine light activation, a diagnostic scan may reveal issues with one of the converters or related sensors.
Summary
In summary, the 2014 Nissan Rogue has two catalytic converters in its exhaust system: a close-coupled cat near the engine and a second cat further downstream, forming a dual-cat setup that complies with emissions standards for that model year.