There are two types of oxygen sensors used in practical applications: zirconia type oxygen sensors and titanium oxide type oxygen sensors. And common oxygen sensors can be divided into single lead, double lead, and three lead,; A single lead zirconia type oxygen sensor; Double lead titanium oxide oxygen sensor; The three lead type oxygen sensor is a heated zirconia type oxygen sensor, and in principle, the three lead types of oxygen sensors cannot be replaced.
Once the oxygen sensor malfunctions, the computer of the electronic fuel injection system will not be able to obtain information on the oxygen concentration in the exhaust pipe, thus unable to provide feedback control for the air-fuel ratio. This will increase engine fuel consumption and exhaust pollution, and cause engine problems such as unstable idle, misfire, and surging. Therefore, it is necessary to promptly eliminate faults or replace them.