Honda Fit: Fuel and Emissions System Description - Catalytic Converter System

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

See also:

Emissions Testing
Testing of Readiness Codes Your vehicle uses “readiness codes,” as part of its onboard self diagnostic system. Some states refer to these codes during testing to see if your vehicle’s em ...

ATF Filter Replacement (A/T)
Remove the air cleaner assembly. Disconnect the ATF cooler hoses (A) from the ATF filter (B). Remove the ATF filter holder (C). Remove the ATF filter, and ...

Tires
To safely operate your vehicle, your tires must be the proper type and size, in good condition with adequate tread, and correctly inflated. The following pages give more detailed information on how ...