Prodigy P2 Display Flashing Between .C. and N.C. on a 2010 Dodge Ram Pickup

Expert Reply:

From your description of the problem, it sounds like you might have one of 3 problems. Since the display is flashing between .C. and N.C. this means the controller boost setting is set and the controller is not detecting the trailer connection. The boost feature being set is not a problem, but you should make sure the trailer connectors are mated properly.

First, check to be sure all of your trailer brake magnets are properly grounded.

Next, make sure the trailer connectors do not have corrosion inside them causing a bad connection between the truck and trailer.

Finally, you may have an open circuit on brake output wire. Check the trailer connectors to be sure the brake wire has not become disconnected, then make sure the brake output wire has not been damaged or shorted to the vehicle or trailer frame in some way.

expert reply by: Bob G