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What is an rear o2 sensor

(1995 Nissan Maxima)
in Columbus, GA on May 16, 2009
what does do? would this cause poor accelation and cutting off when stopped
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Popular Answer
on May 18, 2009
https://repairpal.com/estimator/oxygen-sensor-replacement-cost

Oxygen sensors are a critical part of your emission control system, and if one goes bad, it can cause serious performance issues. There may be a separate problem with the emissions control system, so a thorough diagnosis is a good idea.
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