Removal - 1/1

The engine uses two upstream heated oxygen sensors, one in each exhaust manifold (Fig 1).

Fig 1: Identifying Heated Oxygen Sensor-1/1 Location

Courtesy of DAIMLERCHRYSLER CORP.

WARNING: THE EXHAUST MANIFOLD, EXHAUST PIPES AND CATALYTIC CONVERTER BECOME VERY HOT DURING ENGINE OPERATION. ALLOW ENGINE TO COOL BEFORE REMOVING OXYGEN SENSOR.

CAUTION: When disconnecting the sensor electrical connector, do not pull directly on wire going into sensor.

Disconnect the heated oxygen sensor electrical connector.
Use a socket such as Snap-On YA8875 or Special tool C4907A to remove oxygen sensor (Fig 2).

Fig 2: Identifying Heated Oxygen Sensor-1/1
Courtesy of DAIMLERCHRYSLER CORP.