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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Do you have a Superchips programmer? If not, you can still download the DTC list from them in .pdf, just go to the site, click on installation then scroll down to Dodge - Chrysler applications. 2161 is Vehicle Speed Sensor B Interm/Erratic. Hope this helps.