What symptoms will a car show if the oxygen sensor is broken?

[DeKylie]

A faulty oxygen sensor in a car may cause the following symptoms: 1. Malfunctions: It can lead to increased engine fuel consumption and exhaust pollution, as well as unstable idling, misfires, and surging. 2. Loss of feedback control: The ECU of the electronic fuel injection system will not receive information about the oxygen concentration in the exhaust pipe, thus failing to provide feedback control for the air-fuel ratio. Relevant information about the car oxygen sensor is as follows: 1. Function: The oxygen sensor is used to detect the oxygen concentration in the exhaust and send feedback signals to the ECU, which then adjusts the fuel injection amount to keep the air-fuel ratio near the theoretical value. 2. Working principle: It uses a ceramic sensing element to measure the oxygen potential in the car's exhaust pipe, calculates the corresponding oxygen concentration based on chemical equilibrium principles, and monitors and controls the combustion air-fuel ratio to ensure product quality and compliance with exhaust emission standards.