WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
PICK UP MODELS
Fig 1: Identifying O2 Sensor Module
Courtesy of CHRYSLER LLC
The oxygen sensor module (1) is located under the vehicle. It is bolted to the outer side of right frame rail (4).