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What is the method to check the condition of an oxygen sensor?

1 Answers

ElisaDella

07/30/25 7:04am

Check the color of the oxygen sensor: If the tip is light gray, it indicates that the oxygen sensor is functioning normally. If the tip is white, it means the oxygen sensor has failed due to silicon contamination and is no longer effective. The automotive oxygen sensor is a critical feedback sensor in the electronic fuel injection engine control system. It plays a key role in controlling vehicle exhaust emissions, reducing environmental pollution, and improving the fuel combustion quality of the engine. The oxygen sensor uses a ceramic sensing element to measure the oxygen potential in various heating furnaces or exhaust pipes. Based on the chemical equilibrium principle, it calculates the corresponding oxygen concentration to monitor and control the air-fuel ratio during combustion, ensuring product quality and compliance with exhaust emission standards.

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