Sensor, Oxygen: Installation: Installation

Fig 1: Oxygen Sensor Connectors

Courtesy of CHRYSLER GROUP, LLC

The engine is equipped with two heated oxygen sensors:

• The upstream oxygen sensor (1) is referred to as the 1/1 sensor.
• The downstream oxygen sensor (2) is referred to as the 1/2 sensor.

1. If reinstalling the original oxygen sensor, coat the sensor threads with an anti-seize compound such as Loctite 771- 64 or equivalent. New sensors have compound on the threads and do not require an additional coating. Do Not add any additional anti-seize compound to the threads of a new oxygen sensor. 
2. Install the oxygen sensor and tighten to 45 N.m (33 ft. lbs.).
   CAUTION:

   Never apply any type of grease to the oxygen sensor electrical connector, or attempt any repair of the sensor wiring harness.

3. Connect the heated oxygen sensor electrical connector.
4. Lower the vehicle.
5. Connect the negative battery cable and tighten nut to 5 N.m (45 in. lbs.).