The Camshaft Position Sensor (CMP sensor) on a 2005 Dodge Stratus is located on the
front of the engine, near the camshaft sprocket. However, the exact location varies slightly depending on the engine (2.0L or 2.4L). You'll need to consult a repair manual specific to your Stratus's engine to get the most precise location. A repair manual with diagrams will be invaluable.
It's usually a fairly accessible sensor, often mounted on the valve cover or near the timing cover. Be aware that the area around the timing components can be hot when the engine is running.