Troubleshooting No Trailer Connection Message on Tekonsha P3
Question:
I have everything hooked up and my trailer plugged in but it say on my screen that no trailer is connected. My tester is showing a dim light from the blue wire. Any suggestions? Could this be a grounding issue?
asked by: Tyler B
Expert Reply:
I would start by inspecting the connection on both your vehicle and trailer. This issue is often caused by corrosion on the 7-way connections. It probably wouldn't hurt to clean the connections one way or another.
If this does not solve the problem then we will move on to wiring. I would check all of the brake controller connections and make sure they are good. If you had a plug-in connection try unplugging it and plugging it back in to make sure it is seated firmly. This would also be the time to check the ground connection. If you aren't sure about it, you may want to try moving it to see if it solves the problem.
Once this is done I would move on to testing the wires. Since I don't know where you checked the wire at, start by testing the blue wire behind the brake controller. If no power is present it may be that the controller is malfunctioning. If there are no issues move back to the 7-way connection on the vehicle. If this is where you tested originally and found low or no power, you will need to inspect the wire for a short. If there is no issue at the vehicle 7-way you want to continue to test, working your way back toward the magnets.
I have attached some helpful articles that go over troubleshooting brake controllers in greater detail for your reference. If you are unable to locate the problem please reach out and I will help you troubleshoot further.
Product Page this Question was Asked From
Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LCD Display
- Up to 360 Degrees
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Article: Testing Brake Controls
- Shop: Dielectric Grease for Electrical Connectors, 2 oz.
- Shop: Hook Probe Circuit Tester
- Q&A: No Trailer Connection on Tekonsha P3 Brake Controller 90195 on a 2000 Toyota Tundra
- Q&A: No Trailer Connection Error Message w/ Tekonsha P3 Brake Controller on 2010 Ford Ranger
- Q&A: Troubleshooting Tekonsha P3 Brake Controller Not Recognizing Trailer
- Shop: Firestone Coil-Rite Air Helper Springs - Rear Axle
- Shop: Lippert Patio Upgrade Kit for Toy Hauler Garage Doors - 94" x 94"
- Shop: Suspension Enhancement
- Q&A: Troubleshooting Leakages On Firestone Ride-Rite Air Helper Shocks on Ford F-150
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Trailer Hitch
- Search Results: air bags
- Video: Air Lift LoadLifter 5000 Ultimate Rear Air Helper Springs with Internal Jounce Bumpers Review
- Q&A: What Is An OEM Prep Package And How Do I Know If I Have It
- Shop: Trailer Wiring
- Search Results: air lift
- Article: Trailer Wiring Diagrams
- Shop: Brake Controller
- Shop: etrailer Hitch Pin Alignment Collar for Hitch Accessories - 2" Hitches
- Q&A: All Parts Needed to Flat Tow 2014 Chevy Silverado 1500 Behind Motorhome
- Search Results: air suspension compressor kit
- Article: How to Choose the Right Trailer Hitch Class
- Shop: Redarc Tow-Pro Liberty Brake Controller - Dash Knob - 1 to 2 Axles - Proportional
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: 25980ez
- Shop: Fifth Wheel Hitch
- Video: Roadmaster Active Suspension Leaf Spring Kit Review
- Video: Air Lift LoadLifter 5000 Rear Axle Air Helper Springs Review