1. If the oxygen sensor is broken, it will cause the car to exceed the emission standard, the engine condition will deteriorate, causing the car to idle and stall, the engine to run inaccurately, and the power will decrease.
2. If the rear oxygen sensor is broken, it will cause the car's power to decrease, the acceleration will be slow, and the air-fuel ratio will be inaccurate. Fuel consumption increases, because the carbon deposits on the oxygen sensor will cause abnormal signal output, resulting in an unbalanced engine mixture ratio and increased fuel consumption. With the increase in pollutant emissions, the annual inspection of exhaust emissions fails, making the annual inspection unqualified.
3. The same reason is that simply replacing the oxygen sensor will not solve the problem. The data of poor combustion will still light up the fault light after accumulating a certain number of times. If the combustion is not good, it will shake, and if the oil circuit is dirty, it will not burn well. The solution is to use the general original liquid of the driver for 4 consecutive times to refuel the tank more. If the oil circuit is clean and the combustion is good, there will be no more.
4. Due to poor engine combustion, carbon deposits are formed on the surface of the oxygen sensor, or oil or dust and other sediments enter the oxygen sensor, which will hinder or block the external air from entering the oxygen sensor, making the signal output by the oxygen sensor inaccurate, and the ECU cannot correct the air-fuel ratio in time.
5. A broken oxygen sensor will have the following effects on the vehicle: insufficient engine power, high oxygen content in exhaust gas, high fuel consumption, reduced power, loud noise, and the fault light will be on. It will also cause excessive emissions, deterioration of engine operating conditions, vehicle idling and stalling, inaccurate engine operation, and reduced power.