Troubleshooting Flashing Error Code 5.H on Tekonsha Prodigy Brake Controller

Question:

Flashing flashing lights on prodigy brake controller I have a lot prodigy break controller for my trailer and Im having a flashing 5.h. wondering what that means

asked by: Slim

Expert Reply:

The code 5.H (flashes 2x per second or a steady display) on the Prodigy P2 # 90885 indicates the brake wire is seeing a short during idling conditions. This could be due to dirt or corrosion on the pin connections of your 7-way, so I recommend cleaning your connections using sand paper or steel wool and then using dielectric grease # 11755 to protect from moisture and debris.

If you are using an LED tester to check your functions, this is likely the issue and you should check your brake output signal using a circuit tester like # PTW2993 on the 5 o'clock pin while hitting the manual override on your controller since you are at a stop and it is a proportional controller. If you still get the error, cut the blue wire coming from the controller about 6 inches back and test it with the circuit tester in the same way with the manual override. If the error goes away, you have isolated the wire short and will need to run a new wire using # 10-1-1 from that brake controller output to the 7-way using butt connectors like # DW05745-5.

expert reply by: Jason S