Oxygen Sensor Heating Before Catalytic Converter Activation

People have often stated that the oxygen sensor installed behind the catalytic converter in a common gasoline engine setup has only one function.

Oxygen sensor heating before catalytic converter activation.

Oxygen sensors are laid out in banks which refer to cylinders and in sensor numbers referring to before or after the catalytic converter. Hi first post here hope i ve chosen the right forum. Bank 2 or b2 refers to cylinders 5 8. The shop that called me also replaced the o 2 sensor.

Oxygen sensor heating after catalytic converter activation fault code 2a53 regards jd. 2c2d oxygen sensor before catalytic converter bank 1. If the sensor has power and a control activation from the. The broadband oxygen sensor continuously measures the residual oxygen in the exhaust gas.

Obviously replacing the sensor was not the proper fix. Followup from the pelican staff. Other engine problems such as fuel trim running too rich or too lean oil or coolant burning or engine misfire problems could all lead to catalytic converter. There is generally no disagreement with the role in catalyst testing.

July 26 2016. The fluctuating values of the residual oxygen are sent to the engine control unit as a voltage signal. 283000 oxygen sensor after catalytic converter heating activation. The oxygen sensor before catalytic converter is a broadband oxygen sensor control sensor.

That code is for the sensor heater post cat sensor. Bank1 or b1 refers to cylinders 1 4. The oxygen sensor before catalytic converter is a broadband oxygen sensor control sensor. A technician can determine if the sensor is responding as it should.

Sensor 2 or s2 refers to the sensor after the catalytic converter. I m always a bit suspicious when things happen while the car is in a garage for repair however is this most likely just a coincidence. The broadband oxygen sensor continuously measures the residual oxygen in the exhaust gas. The vehicle had come from another shop which had already replaced the oxygen sensor.

I have two questions regarding the following fault code. The fluctuating values of the residual oxygen are sent to the engine control unit as a voltage signal. To test the health of the catalytic converter. 2c9f oxygen sensor heating after catalytic converter 2 activation 1.

Open circuit 284e00 oxygen sensor after catalytic converter nernst voltage signal. Specifically that it plays no role in engine mixture control. Open circuit 283400 oxygen sensor after catalytic converter heating activation. A lazy oxygen sensor might falsely indicate a catalytic converter problem yet not set a dtc for itself.

The code appeared right after the clutch and flywheel had been replaced.