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Removal - 2.4L Turbo/2.4L SRT-4

Disconnect the negative battery cable.
Unlock and disconnect the electrical connector. It is on the passenger side near the EVAP purge solenoid.
Raise vehicle and support.
Remove sensor using an oxygen sensor crow foot wrench such as Snap-On tool YA8875 or equivalent See Fig 1.

Fig 1: UPSTREAM O2 SENSOR- 2.4L TURBO

Courtesy of DAIMLERCHRYSLER CORP.