For 2008-10 Nissan Altima 2.5L L4 Exc.Calif 2X Oxygen Sensor Upstream+Downstream
Altima 2.5L L4 2007 2008 2009 2010（Federal Emissions）. Oxygen Sensor. 2 x Oxygen Sensors. If the sensor is good, further diagnosis is required. There’re many different codes for specific functional failures, which are NOT necessarily relevant to the sensor.