New Topics › Forums › General Discussion › 1999 – 2002 Nissan Quest › Please help me find the downstream O2 sensor on a 2002 Quest SE. › Reply To: what was the exact trouble
what was the exact trouble code?
the downstream/ front heated o2 sensor is located at the front exhaust manifold…
you pop the hood & see the oil cap right there? look slightly to the driver side of it & you’ll see the connector to the o2 sensor