What is the voltage range of an oxygen sensor?

1 Answers
DelKennedy
07/30/25 1:47am
Oxygen sensor voltage ranges between 0.1V to 0.9V, with an average value between 0.4V to 0.5V. The faster the voltage frequency changes, the better the sensor performance. If the voltage remains at 0V or 1V without variation, it indicates significant aging of the oxygen sensor, requiring prompt replacement. The automotive oxygen sensor serves as a crucial feedback component in electronically fuel-injected engine control systems, playing a key role in regulating vehicle emissions, reducing environmental pollution, and improving fuel combustion efficiency. Vehicles are equipped with both upstream (front) and downstream (rear) oxygen sensors, which function synergistically.
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