We ended up bypassing the 2012 Dodge Ram factory brake controller as it was completely incompatible with our Titan BrakeRite II SD hydraulic brake controller. We installed the Tuson DirecLink NE brake controller and all was well.
We did an isolation of the truck controller so it thinks all is well as it never "sees" the trailer, thus no error codes are thrown.
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC
TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell
2014 31' Classic model 30 twin beds, 50 amp service, 900 watt solar system, Centramatics, Dill TPMS, disc brakes, 16" tires & wheels