Honda CR-V: 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 engine is started and warmed up,
the vapor is drawn into the engine
and burned during driving.
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The onboard refueling vapor
recovery (ORVR) system captures
the fuel vapors during refueling. The
vapors are adsorbed in a canister
filled with activated carbon. While
driving, the fuel vapo
The exhaust emissions controls
include three systems: PGM-FI,
ignition timing control, and three
way catalytic converter. These three
systems work together to control the
engine’s combusti
The emissions control systems are
designed and certified to work together
in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you shoul
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DTC P2270: Secondary HO2S (Sensor 2)
Circuit Signal Stuck Lean
DTC P2271: Secondary HO2S (Sensor 2)
Circuit Signal Stuck Rich
NOTE: Before you troubleshoot, record all freeze data and any on-board
snapshot, and review the general troubleshooting information.
1. Turn the ignition switch ON (II).
2
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The audio system has a self-diagnostic function. To run the self-diagnostic
function, do the following:
How to check for audio system condition
NOTE: The audio unit must be in the code enter screen before doing the
self-diagnostic function.
1. Turn the ignition switch to the AC
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