O2 Sensor: Description

WARNING: This page is about a different car, the 2004 Dodge Grand Caravan, 2004 Dodge Caravan, and 2004 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.

The upstream oxygen sensor threads into the outlet flange of the exhaust manifold (Fig 1) or (Fig 2).

Fig 1: Identifying O2 Sensor Upstream 1/1 - 2.4L

Courtesy of DAIMLERCHRYSLER CORP.

Fig 2: Identifying O2 Sensor Upstream 1/1 - 3.3/3.8L

Courtesy of DAIMLERCHRYSLER CORP.

The downstream heated oxygen sensor threads into the outlet pipe at the rear of the catalytic convertor (Fig 3).

Fig 3: Identifying O2 Sensor Downstream 1/2 - 2.4/3.3/3.8L

Courtesy of DAIMLERCHRYSLER CORP.