Unit, Diesel Exhaust Fluid Dosing Control: Description

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

The Diesel Exhaust Fluid (DEF) Dosing Control Unit controls the function of the Urea's "wet system" (heaters, pump, and injector). The DEF Dosing Control Unit receives a signal from the Powertrain Control Module (PCM) on when to inject. The DEF Dosing Control Unit is mounted on the DEF tank.
The DEF dosing control unit is a generic module that needs to be flashed if the module has been replaced. Using the scan tool, flash DEF dosing control unit with the latest available software calibration.