Honda CR-V: Emissions Controls
Honda CR-V (2006–2011) Owner's Manual / Technical Information / 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.
- The Clean Air Act
- Crankcase Emissions Control System
- Evaporative Emissions Control System
- Onboard Refueling Vapor Recovery
- Exhaust Emissions Controls
- Replacement Parts
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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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Opening and Closing the Hood
1. Park the vehicle, and set the
parking brake. Pull the hood
release handle located under the
lower left corner of the dashboard.
The hood will pop up slightly.
2. Reach in between the hood and
the front grille with your fingers.
The hood latch handle is above
the ‘‘H’’ log
General Troubleshooting Information
System Indicator locations
The system has two indicators.
The low pressure indicator (A)
The TPMS indicator (B)
How TPMS Works
The TPMS (tire pressure monitoring system) has a low
pressure indicator, and a TPMS indicator. When the
TPMS control unit detects low pressure in a tire, or a
problem i
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