Challenger V6-3.5L (2009)
Oxygen Sensor: Service and Repair
Installation
3.5L
NOTE: When replacing an O2 Sensor, the PCM RAM memory must be cleared, either by disconnecting the PCM C-1 connector or
momentarily disconnecting the Battery negative terminal. The NGC learns the characteristics of each O2 heater element and these old
values should be cleared when installing a new O2 sensor. The customer may experience driveability issues if this is not performed.
CAUTION: Never apply any type of grease to the oxygen sensor electrical connector, or attempt any soldering of the sensor wiring harness.
The engines uses two heated oxygen sensors, one in each exhaust manifold.
1. After removing the sensor, the exhaust manifold threads must be cleaned with an 18 mm X 1.5 + 6E tap. If reusing the original 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. Tighten the sensor to 41 Nm (30 ft. lbs.) torque.
2. Connect the heated oxygen sensor electrical connector.
3. Lower vehicle.
4. Install the negative battery cable.
