The 2006 Honda Pilot uses two catalytic converters—one on each bank of the V6 engine.
For the 2006 Pilot, the 3.5-liter V6 is configured with dual exhaust paths. Each bank has its own converter near the manifold, and the system is designed to reduce emissions from both sides of the engine before the exhaust reaches the rest of the exhaust system. This dual-cat layout is common for Honda SUVs of that era.
Location and function
Key placement details and how the dual catalysts work together to scrub emissions.
- One catalytic converter is mounted on the left (driver-side) exhaust bank near the engine, connected to its own oxygen sensors.
- The second catalytic converter sits on the right (passenger-side) exhaust bank near the engine, also paired with its own oxygen sensors.
In short, the 2006 Pilot uses two catalytic converters, one for each bank; both are integral to the vehicle’s emissions control system and may require inspection if performance or emissions issues arise.
Maintenance and replacement considerations
Before inspecting or replacing, consider what you need to know about diagnosing and costs.
- Common symptoms of a failing catalytic converter include reduced power or acceleration, poorer fuel economy, a sulfur-like odor from the exhaust, and a check engine light with codes such as P0420 or P0430 indicating catalytic efficiency issues.
- To confirm which converter is failing, technicians typically review bank-specific oxygen sensor readings and may perform backpressure or temperature checks; in high-mileage vehicles both converters can be affected.
- Replacement cost and labor can be significant. Depending on parts (OEM vs aftermarket) and whether one or both converters must be replaced, plan for a sizable estimate since the exhaust layout can make access challenging.
In short, if a diagnostic points to catalytic converter issues on a 2006 Pilot, the technician will determine whether one bank or both banks are affected, which informs the replacement plan and budget.
Summary
The 2006 Honda Pilot is equipped with two catalytic converters—one for each exhaust bank. This dual-cat configuration enhances emissions control for the V6 engine but means that if problems arise, diagnostics should verify whether both converters are affected. Proper diagnosis and planning are essential for any replacement work.