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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 Poor AM or FM radio reception or interference (with navigation)

NOTE: Check the radio reception in an open area. Compare it to a known-good vehicle of the same model, year, and trim level whenever possible. If necessary, have the customer demonstrate the symptom. Poor reception/interference can be caused by the following. The radio station is far away.

 Auto Door Locking

The auto door locking feature has three possible settings: The auto door locking is deactivated all the time. The doors and tailgate lock whenever you move the shift lever out of the Park (P) position. The doors and tailgate lock when the vehicle speed reaches 9 mph (15 km/h). This i

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