Oxygen Sensor

WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

For Oxygen (O2) sensor testing, perform appropriate O2 sensor diagnostic test. See the following:

On 3.9L and 5.9L, see DIAGNOSTIC TROUBLE CODE DEFINITIONS under DIAGNOSTIC TEST in SELF-DIAGNOSTICS - DAKOTA - 3.9L & 5.9L article.
On 4.7L, see DIAGNOSTIC TROUBLE CODE DEFINITIONS under DIAGNOSTIC TEST in SELF-DIAGNOSTICS - DAKOTA - 4.7L article.