Troubleshooting S.H. Display on Tekonsha Prodigy P2 Trailer Brake Controller

Question:

Setting up prodigy 2 brake controller When the rv is running and towing car on dolly, the setting goes to 5.H. what does it mean?

asked by: Joe

Expert Reply:

The Tekonsha Prodigy P2 Trailer Brake Controller # 90885 will display "S.H." (flashes 2 times per second) when it senses a short on the brake wire. It also can be caused by some test lights or non-Tekonsha circuit testers.

If the test lights are not the issue, then I recommend checking to make sure both the vehicle and tow dolly connector are free of debris or corrosion. Also check along the wiring for any pinched or damaged areas that might be leading to a short. It could be that there is an exposed piece of wiring that is making contact with the trailer frame.

If you are still unable to resolve the issue, please let me know and I will be happy to look into this further. I have also attached a brake controller troubleshooting article that you might find helpful.

expert reply by: Chris R

Chris P.

6/8/2020

just put a Prodigy p2 on a 2011 ford ranger and set to 6 on manual lever when i put foot on the brake i don't get a volt reading when i set it at 12 volts and use foot brake i get a reading of about 4.9 volts can you help

Chris R.

6/11/2020

The Tekonsha Prodigy P2 # 90885 is a proportional controller, which means it sends back power to the brakes based on deceleration. If you're testing the controller while sitting still/parked, it's going to send back very little (if any) power when stepping on the brake pedal. I would make sure you're getting full power when using the manual override, otherwise you'll want to test its operation by actually taking the truck and trailer out for a test drive in a controlled environment like an empty parking lot.