What are the effects of a faulty oxygen sensor in the catalytic converter on a car?

1 Answers
McLucas
07/29/25 12:25pm
Once the oxygen sensor fails, the computer of the electronic fuel injection system will not be able to obtain the oxygen concentration information in the exhaust pipe, and thus cannot perform feedback control on the air-fuel ratio. This will lead to increased engine fuel consumption and exhaust pollution, as well as engine issues such as unstable idle, misfires, and surging. More information about the oxygen sensor is as follows: 1. The location and function of the oxygen sensor: The front oxygen sensor is located at the exhaust manifold and is used to adjust the mixture concentration. The rear oxygen sensor is located behind the catalytic converter and is used to monitor the working condition of the catalytic converter. 2. Replacement cycle of the oxygen sensor: There is no fixed replacement cycle for the oxygen sensor, but it is recommended to replace the oxygen sensor for vehicles with more than 100,000 kilometers.
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