WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
(A933) FUSED B(+) CIRCUIT OPEN OR SHORTED
(Z912) GROUND CIRCUIT OPEN
(D178) AND (D177) CAN INTERIOR BUS (125K) CIRCUITS OPEN