What are the causes of oxygen sensor failure?
1 Answers
Oxygen sensor failure is caused by: 1. Ceramic breakage of the oxygen sensor; 2. Burnout of the heater resistance wire; 3. Internal wiring disconnection of the oxygen sensor. The functions of the oxygen sensor are: 1. To determine whether there is excess oxygen in the exhaust after engine combustion; 2. To ensure the high conversion efficiency of the three-way catalytic converter for pollutants in the exhaust. The working principle of the oxygen sensor is: It uses a ceramic sensing element to measure the oxygen potential in the vehicle's exhaust pipe, calculates the corresponding oxygen concentration based on the chemical equilibrium principle, and achieves the purpose of monitoring and controlling the combustion air-fuel ratio to ensure product quality and compliance with exhaust emission standards as a measuring component.