Honda CR-V: Emissions Controls

The burning of gasoline in your vehicle’s engine produces several byproducts.

Some of these are carbon monoxide (CO), oxides of nitrogen (NOx), and hydrocarbons (HC).

Gasoline evaporating from the tank also produces hydrocarbons. Controlling the production of NOx, CO, and HC is important to the environment.

Under certain conditions of sunlight and climate, NOx and HC react to form photochemical ‘‘smog.’’ Carbon monoxide does not contribute to smog creation, but it is a poisonous gas.

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 The Clean Air Act

The United States Clean Air Act* sets standards for automobile emissions. It also requires that automobile manufacturers explain to owners how their emissions controls work and what to do to

 Crankcase Emissions Control System

Your vehicle has a positive crankcase ventilation system. This keeps gasses that build up in the engine’s crankcase from going into the atmosphere. The positive crankcase ventilation valve

 Evaporative Emissions Control System

As gasoline evaporates in the fuel tank, an evaporative emissions control canister filled with charcoal adsorbs the vapor. It is stored in this canister while the engine is off. After the en

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 Changing a Tire with TPMS

If you have a flat tire, the low tire pressure indicator will come on. Replace the flat tire with the compact spare tire. Each wheel (except the compact spare tire wheel) is equippedwith a tire pressure sensor. You must use TPMS specific wheels. It is recommended that you always have

 Vents, Heating, and A/C

Vents, Heating, and A/C Fan Control Dial Turn this dial to increase or decrease the fan speed and airflow. Temperature Control Dial Turning this dial clockwise increases the temperature of the airflow. Air Conditioning (A/C) Button This button turns the air conditioning on and off. T

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