Set Condition
WARNING: This page is about a different car, the 2016 RAM 3500 HD and 2016 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
The DEF Quality Sensor detects a short to ground/low voltage condition on the internal temperature sensor for 5 seconds or the temperature at the DEF Quality Sensor temperature sensing element is less than -40°C (-40°F) for 5 seconds.