Set Condition:
WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
If the Integrated Trailer Brake Module (ITBM) is configured incorrect or the ignition voltage is below 9v or greater than 16v, this code will set. Automatic braking and manual lever braking (squeeze switch) are disabled.