WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
(L914) CARGO LAMP SWITCH SIGNAL CIRCUIT SHORTED TO GROUND
(L914) CARGO LAMP SWITCH SIGNAL CIRCUIT SHORTED TO THE (Z910) GROUND CIRCUIT