Dodge Ram 3500
Report: Check Engine Light Due to Failed Thermostat
Dodge Ram 3500 Problem
Engine Affected: 6.7L 6 Cylinder Diesel Turbo
The thermostat may fail to close completely, causing the Check Engine Light to illuminate. This problem will prevent the engine from reaching normal operating temperature; a new thermostat should be installed.
Visitor, 2007 Dodge Ram 3500, 6.7L 6 Cylinder Diesel Turbo
I have had this issue with mine as well, I need to take it in to get it fixed.