what is an rear o2 sensor on 1995 Nissan Maxima

what does do? would this cause poor accelation and cutting off when stopped

Asked by for the 1995 Nissan Maxima

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.