Why are oxygen sensors easy to break in cars?

1.Poor fuel quality:

If the quality of the fuel added to the car is too low, it will not burn effectively in the engine cylinder, and a considerable amount of harmful substances and impurities will be produced in the exhaust gas, which will naturally affect the damage of the vehicle's oxygen sensor. In this case, to add high-quality fuel, add a bottle of fuel treasure every 3000-5000 kilometers to clean the car's fuel tank.

2.Spark plug failure:

When there is a problem with the spark plug, it cannot be ignited properly. Of course, the fuel and gas mixtures in the engine cylinders cannot be burned efficiently, resulting in more harmful substances and impurities damaging the oxygen sensor. In this case, it is necessary to check the wear degree of the spark plug, check whether the working voltage of the live wire coil is normal, and replace the spark plug with a new one if necessary.

3.Three-way catalytic converter failure:

The three-way catalytic converter converts toxic gases in automobile exhaust into harmless substances through its redox function. If the three-way catalytic converter is not working properly, the oxygen sensor will be damaged accordingly, and this situation should be repaired at a repair shop.

If the oxygen sensor of the car is broken, the engine will have unstable idling, lack of fire, surge and other faults. Therefore, it is necessary to troubleshoot or replace it in a timely manner. Once the sensor fails, the computer of the electronic fuel injection system will not be able to obtain the information of the oxygen concentration in the exhaust pipe, so it will not be able to feedback and control the air-fuel ratio, which will increase the fuel consumption of the engine and the exhaust pollution.

The performance of the broken sensor to the car is as follows: 1. The performance of the broken speed sensor: the speed sensing function is mainly to detect the speed of the electronically controlled car, and the control computer uses this input signal to control the engine idling, the torque lock of the automatic transmission, the automatic transmission shift, the opening and closing of the engine cooling fan and cruise control and other functions; 2. Symptoms of broken speed sensors:

engine instability at idle; When the vehicle starts or slows down and stops, there is an instantaneous pause or stallion; Reduced engine acceleration; There is a deviation in the speed display on the meter; The engine fault light is on; 3. The performance of the throttle position sensor is broken: if the throttle position sensor is out of tune, the correct ignition advance angle and the air-fuel ratio of the mixture cannot be guaranteed. The throttle position sensor should be accurately adjusted to the specified voltage reading, if the adjustment is too low, because the exhaust gas recirculation system does not provide enough exhaust gas in time, detonation will occur when accelerating, if the adjustment is too high, because the exhaust gas recirculation system reacts too fast, the exhaust gas provided is too much, so that the power is reduced; 4. The performance of the coolant temperature sensor is broken:

If the coolant temperature sensor fails, the engine will have unstable idling, lack of fire, flameout or increased fuel consumption, etc., a multimeter should be used to detect the resistance value of the coolant sensor at various operating temperatures according to the manufacturer's regulations.

The front oxygen sensor is an important vehicle component that needs to be considered for its own reaction, and its operating environment needs to be considered. Aging and poisoning can occur due to frequent exposure to excessive carbon levels. Aging refers to low work efficiency due to high temperatures, and poisoning refers to excessive accumulation of carbon monoxide that causes the oxygen sensor to fail and cause poisoning.

In addition, if the resistance wire inside the front oxygen sensor burns out or the sensing wire falls off, it can also cause failure. If the vehicle has a decrease in power, rapid acceleration, unstable idling, increased fuel consumption, and pollutant emissions exceeding the hand mark, it may be a sign that the front oxygen sensor is broken. Of course, the first thing to check is the car's engine, whether it is a spark plug failure or a failure of the oil supply device.

If it is found that the vehicle oxygen sensor is faulty, there are the following phenomena:1Once the oxygen sensor fails, the computer of the electronically controlled fuel injection system cannot obtain information about the oxygen concentration in the exhaust pipe; 2.

Therefore, the air-fuel ratio cannot be adjusted by feedback, which will increase the fuel consumption and exhaust pollution of the starting engine, and the engine will have problems such as unstable idling, fire, and surge; 3.As an important part of the electronically controlled fuel injection system, the oxygen sensor plays a vital role in the normal operation of the engine and the effective control of exhaust emissions. 4.Once the oxygen sensor and its connecting cable fail, it will not only exceed the emission standard, but also worsen the engine working condition, affecting the symptoms of vehicle idling and stopping, engine rotation misalignment, and power decline.

Therefore, the problem needs to be rectified or replaced immediately.