Set Condition
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 PCM detects that there is no increase in the Main Fuel Tank fuel level when there is a decrease in the Auxiliary Fuel Tank fuel level after a commanded fuel transfer. The BCM reports fuel level to the PCM over the CAN Bus.