How to determine the role of oxygen sensor oxygen sensor oxygen sensor bad or bad impact on the car

How to determine the role of oxygen sensor oxygen sensor oxygen sensor bad or bad impact on the carSimple and effective means of detection is to use a scanner to read the oxygen sensor's dynamic data flow, see the work of the oxygen sensor signal voltage value is changed within reasonable limits ; using an oscilloscope waveform of the oxygen sensor detection  Effect of oxygen content in the exhaust gas oxygen sensor can cause a change in the voltage signal within the operating voltage range of the jump stop . The engine control voltage received by Crank Position Sensor signal voltage , so the voltage value to determine the state of the gas mixture , thereby adjusting the fuel injection pulse width . This is a simple statement. The role of oxygen sensors significance [ fuel trim , catalytic converter monitoring, emissions monitoring , oxygen sensor monitoringAbnormal oxygen sensor , caused by the failure is multifaceted , performance of fault symptoms are not the same, as may, the fault location , the signal value of the size , Make ----- and different control strategies .