How do you say goodbye to the front oxygen sensor and the rear oxygen sensor?

Depending on the detection method, the front oxygen sensor computer adjusts the amount of fuel injected and calculates the ignition time according to the signal. The rear oxygen sensor compares the data with the front oxygen sensor to detect whether the three-way catalytic converter is working properly. The role of the front oxygen sensor is to detect the air-fuel ratio of the engine under different working conditions.

The rear oxygen sensor is mainly used to detect the working quality of the three-way catalytic converter! i.e. the conversion rate of the catalytic converter.

No.

The oxygen sensor is divided into two front and back, and the disassembly method of the two oxygen sensors is similar, we only need to unplug the oxygen sensor, and then use a wrench to unscrew the oxygen sensor. After unplugging the oxygen sensor, the oxygen sensor cannot be powered on, and the oxygen sensor is in a state of failure. After removing the oxygen sensor, we can check whether there is carbon on the surface of the oxygen sensor, if so, we can use the toilet cleaner to soak for 10-15 minutes, and then the working efficiency of the oxygen sensor will be restored.

Precautions for the use of oxygen sensors.

Do not let the oxygen sensor collide with hard objects: because the oxygen sensor has ceramic sensitive elements, if it falls on the ground or collides with other hard objects, this violent vibration and impact may damage the ceramic element or heating element in the sensor.

Avoid pulling the sensor wire: This is the same as other electrical equipment, excessive pulling of the sensor wire may lead to unreliable connection of the sensor, which will affect the operation of the oxygen sensor.

Do not flush the exhaust pipe after the engine is turned off: When the engine has just been turned off, be sure not to flush the exhaust pipe immediately. This is because when the exhaust pipe is cooled sharply from the outside, the ceramic sensitive element of the oxygen sensor will burst, which can lead to damage to the oxygen sensor.

The front and rear oxygen sensors just play different roles. The function of the front oxygen sensor is to feedback the oxygen content in the exhaust gas to the engine computer during the "closed-loop control", and the engine computer corrects the amount of fuel injection according to this signal. The rear oxygen sensor is installed at the rear of the three-way catalytic converter, and the rear oxygen sensor feeds back the oxygen content of the three-way catalytic converter to the engine computer, and the engine computer compares the signals of the two oxygen sensors, and the signal of the front oxygen sensor is higher than that of the rear oxygen sensor under normal circumstances, and if the signals of the two oxygen sensors are the same, it proves that the three-way catalytic converter fails.

Hello, I am your exclusive service technician, attentive, attentive and careful to help you solve the problem of using the car, the front oxygen sensor and the rear oxygen sensor of the car are different. The function of the front oxygen sensor is to detect the air-fuel ratio of the engine under different working conditions, and at the same time, the computer adjusts the amount of fuel injected and calculates the ignition time according to this signal. The rear oxygen sensor is mainly used to detect the quality of the three-way catalytic converter, that is, the conversion rate of the catalytic converter.

The working principle of the front oxygen sensor is to feedback the oxygen content in the exhaust gas to the engine computer during the "closed-loop control", and the engine computer corrects the fuel injection amount according to this signal; The post-oxygen sensor feeds back the oxygen content behind the three-way catalytic stool to the engine computer to detect whether the three-way catalytic converter is working properly (good or bad).

Summary. Hello, I'm glad to answer for you I'm your car master exclusive technician Concentrate on your intentions and sincerely answer your car questions, and find solutions and methods for you to ask as follows: some of the front oxygen sensor and rear oxygen sensor accessories are the same, some are different, it is divided into three lines, and four lines, you need to take a look at your oxygen sensor, is the front and rear two wiring harnesses the same?

If it's the same, it's normal, but the length of their wiring harness is different. In the case of the oxygen sensor, it is mainly used to detect the concentration of the mixture to control the fuel injection, and in the case of the oxygen sensor, it is mainly to detect the conversion efficiency of the three-way catalysis.

Hello, don't worry, I can ask for your question, but wait a minute, I need text for about 2 minutes.

Hello, I'm glad to answer for you I'm your car master exclusive technician Concentrate on your intentions and sincerely answer your car questions, and find solutions and methods for you to ask questions as follows: some of the front oxygen sensor and rear oxygen sensor accessories are the same, some are different, it is divided into three lines, and there are four lines of Nahu ruler, you need to look at your oxygen sensor, the front and rear two wiring harnesses are not the same? If it's the same, it's OK to use it normally, but the length of their wiring harness is different.

In the case of the Donggao oxygen sensor, it is mainly used to detect the concentration of the mixture to control the fuel injection, and in the case of the oxygen sensor, it is mainly to detect the conversion efficiency of the three-way catalysis.

Hello, the data stream can be read through the decoder, the signal of the front oxygen sensor will change all the time, and the signal of the rear oxygen sensor is basically a fixed value.

Hope it helps!

The front and rear oxygen sensors just play different roles. The function of the front oxygen sensor is to feedback the oxygen content of the exhaust gas to the engine computer when the "closed-loop control" is vibrillating, and the engine computer corrects the amount of fuel injected according to this signal. The rear oxygen sensor is installed at the rear of the three-way catalytic converter, and the rear oxygen sensor feeds back the oxygen content of the three-way catalytic converter to the engine computer, and the engine computer compares the signals of the two oxygen sensors, and the signal of the front oxygen sensor is higher than that of the rear oxygen sensor under normal circumstances, and if the signals of the two oxygen sensors are the same, it proves that the three-way catalytic converter fails.