Honda Accord Oxygen Sensor
Honda Accord Oxygen Sensor is the primary measurement device for the fuel control computer n your car to know if the engine is too rich or too lean. The Honda Accord Oxygen Sensor is active anytime it is hot enough, but the computer only uses this information in the closed loop mode. Closed loop is the operating mode where all engine control sensors including the Oxygen sensor are used to get best fuel economy, lowest emissions, and good
power. If your car has lost several miles per gallon of fuel economy and the usual tune up steps do not improve it. An Oxygen sensor is a chemical generator. It is constantly making a comparison between the Oxygen inside the exhaust manifold and Air outside the engine.
The Honda Accord Oxygen Sensor does not begin to generate it's full output until it reaches about 600 degrees F. Prior to this time the sensor is not conductive. It is as if the circuit between the sensor and computer is not complete. The mid point is about 0.45
volts. This is neither rich nor lean. A fully warm Honda Accord Oxygen Sensor *will not spend any time at 0.45 volts*. In many cars, the computer sends out a bias voltage of 0.45 through the O2 sensor wire. If the sensor is not warm, or if the circuit is not complete, the computer picks up a steady 0.45 volts. Since the computer knows this is an "illegal" value, it judges the Honda Accord Oxygen Sensor to not be ready.
The Honda Accord Oxygen Sensor in open loop operation, and uses all sensors except the O2 to determine fuel delivery. Any time an engine is operated in open loop, it runs somewhat rich and makes more exhaust emissions. This translates into lost power, poor fuel economy and air pollution.The Honda Accord Oxygen Sensor is constantly in a state of transition between high and low voltage. Manfucturers call this crossing of the 0.45 volt mark O2 cross counts. The higher the number of O2 cross counts, the better the sensor and other parts of the computer control system are working. It is important to remember that the Honda Accord Oxygen Sensor compares the amount of Oxygen inside and outside the engine. If the outside of the sensor should become blocked,or coated with oil, sound insulation, undercoating or antifreeze,(among other things), this comparison is not possible.
