Honda Fit Quiz
Second generation (2007-2026)

Fuel and Emissions System Description - Catalytic Converter System

In this manual: Second generation (2007-2026)
First generation (2001–2008) — 118Second generation (2007-2026) — 923
~1min read

Catalytic Converter System

Warm Up Three Way Catalytic Converter (WU-TWC) and Under-floor Three Way Catalytic Converter (Under-floor TWC)

The WU-TWC and the under-floor TWC convert hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx) in the exhaust gas to carbon dioxide (CO2), nitrogen (N2), and water vapor.

WU-TWC (ATTACHED TO THE CYLINDER HEAD)

UNDER-FLOOR TWC

Test yourself

A quick Honda Fit quiz: every answer comes with an explanation and a link to the manual page.