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What is the normal resistance value of an oxygen sensor?

1 Answers

StCora

07/29/25 10:19pm

Oxygen sensor resistance values generally range between 0.1-0.9, with the rear oxygen sensor having smaller fluctuations than the front oxygen sensor. However, values may vary depending on brand, model, year, and emission requirements, so specific vehicle models should be considered. Additional information: The following is a related introduction about oxygen sensors: 1. Front oxygen sensor: The front oxygen sensor is installed in front of the three-way catalytic converter and is used to adjust fuel injection. 2. Rear oxygen sensor: The rear oxygen sensor mainly detects the performance of the three-way catalytic converter. The detection method involves the engine control unit comparing the oxygen content measured by the front and rear oxygen sensors. Normally, the front oxygen sensor's signal is higher than the rear oxygen sensor's. If both sensors show the same signal, it indicates that the three-way catalytic converter has failed.

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