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Receiving both codes. Not sure what to replace. I read on here regarding this possibly needing the front O2 sensor needing changing on a Sentra. Not sure if applies to 2005 Xterra. Thx in advance
Vehicle: 2005 Nissan Xterra LE

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Hi there,

These codes are for the driver side front O2 sensor. One code is for the heater and the other is for the sensor not running in closed loop. Usually replacing the O2 sensor will resolve the problem. This is the sensor mounted in the exhaust manifold.

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