What damage does a faulty oxygen sensor cause to a car?

[EdenFitz]

Oxygen sensor failure can cause the following damages to a car: excessive vehicle emissions, deterioration of engine operating conditions, leading to symptoms such as stalling at idle, inaccurate engine operation, and reduced power. The function of an oxygen sensor is to control vehicle exhaust emissions, reduce environmental pollution caused by the vehicle, and improve the quality of fuel combustion in the car's engine. The working principle of an oxygen sensor is similar to that of a battery, with zirconium oxide in the sensor acting similarly to an electrolyte. Its basic working principle is that under certain conditions (high temperature and platinum catalysis), it utilizes the oxygen concentration difference between the inside and outside of the zirconium oxide to generate a potential difference, and the greater the concentration difference, the greater the potential difference.