Troubleshooting Tekonsha Brake Controller That Shows Open Ground, No Brakes

Question

Question:

I have the p3 it start giving the open ground warning so I added a ground to a good ground bolt so I have the battery ground and a frame ground and it still showing the warning. But this morning my batteries were weak could this be the cause are could weak batteries cause the problem

asked by: Aaron A

0

Expert Reply:

The open ground error that the P3 is displaying means it has lost its ground connection to the vehicle battery. This could be a faulty ground inherent in the wiring on the vehicle where the harness plugs in. To see if that is the issue you can bring out a separate car battery if you have one available and sever the white wire on the harness and connect it instead to the negative terminal on the second battery. If that stops the error then you know the issue is a bad ground. A weak battery will not cause this error.

expert reply by: Chris O

0

Answer 1

The owner's manual for the Tekonsha Prodigy P3 #90195 states 4 possible causes of a "NO Trailer Connection!" warning: the trailer is not connected to the tow vehicle, the trailer is connected with an open circuit on the brake line, the…

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Answer 2

It sounds like the bad ground is on the trailer side. Check your ground connection to the frame of your trailer and make sure it is free of rust, debris, and corrosion. It should be a solid bare metal to metal connection. Another thing to check is…

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Answer 3

The maximum tongue weight capacity of your 2005 Chevrolet Silverado 1500 is 600 lbs so the 240 lbs of hitch weight that your trailer has will not be an issue whatsoever. I don't think the gross trailer weight will be a factory either but it will…

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Answer 4

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 5

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 6

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 7

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 8

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 9

Hey Bryan, that's a good question. The pricing can definitely be misleading, but I wouldn't use it to judge the quality of the tire. A lot of that comes down to promotions, inventory, and whether you're looking at a tire by itself or…

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Answer 10

To install a Redarc Tow Pro Liberty in your 2023 Toyota Tacoma Sport you will need the following parts: Redarc Tow-Pro Liberty Brake Controller item #RED24FR Plug-and-Play Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers item #RED99FR…

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Answer 11

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 12

Hey Jonathon thank you so much for all of that additional information! To haul your bikes behind your class C Sprinter motorhome, while flat towing your Mini, I recommend the Hollywood Racks RV Rider Bike Rack item #HLY64FR and the Roadmaster Dual…

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Troubleshooting Tekonsha Brake Controller That Shows Open Ground, No Brakes

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