What is the normal voltage of an oxygen sensor?

1 Answers
Clark
07/28/25 5:15pm
Normal oxygen sensor voltage is around 1.6 volts. Here is more information about oxygen sensors: 1. It uses ceramic sensing elements to measure the oxygen potential in automobile exhaust pipes, calculates the corresponding oxygen concentration based on chemical equilibrium principles, and serves as a measuring component to monitor and control the combustion air-fuel ratio to ensure product quality and exhaust emissions compliance. 2. The function of the sensor is to determine whether there is excess oxygen in the engine's exhaust after combustion, i.e., the oxygen content, and convert the oxygen content into a voltage signal transmitted to the engine computer, enabling the engine to achieve closed-loop control targeting the excess air factor. 3. If the oxygen sensor malfunctions and outputs abnormal electromotive force, the ECU computer cannot precisely control the air-fuel ratio.
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