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What is the operating voltage of the rear oxygen sensor?

1 Answers

HenryMarie

07/30/25 2:06am

The voltage range of the rear oxygen sensor is between 0.1-0.9V, with an average value typically around 0.4-0.5V. Here are some important notes regarding the operating voltage of the rear oxygen sensor: 1. This data is primarily used to provide feedback to the ECU for comparison, ensuring the proper functioning of the three-way catalytic converter. Additionally, the faster the voltage frequency changes, the better the sensor's performance. 2. If the voltage reads 0V or 1V, or remains unchanged, it indicates that the rear oxygen sensor has aged significantly and requires immediate replacement.

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