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 that the DEF concentration has fallen below a calibrated threshold, something other than DEF has been detected for 50% of the time during the 5 minute monitoring period, or the DEF Quality Sensor is unable to determine the DEF concentration value during the 5 minute monitoring period. The DEF Dosing Control Unit detects that the NOx conversion rate across the SCR Catalyst is lower than expected and the tank has been recently refilled. A steady state highway drive cycle will encompass the conditions necessary to run the monitor.