Troubleshooting Flashing .C on a Prodigy P2 Brake Controller

Question

Question:

brake controller work flawlesley for one year since new then 2 days ago it started flashing .c. very fast then slow then fast again manual does not apply brakes, I disconnected the trailer and nothing changes still flashes .c. please advise thanks

asked by: Scott S

0

Expert Reply:

What you are describing sounds like corrosion on the brake output circuit of your vehicle 7-way. When the controller detects a load on the circuit (typically from the trailer brake magnets) it will say that it has connected to a trailer. Corrosion can cause a slight short on the circuit which then can trick the controller into thinking there is a trailer connected.

I would recommend cleaning the pins of your trailer 7-way with some fine grit sandpaper and the problem should go away.

I attached a help article on brake controller troubleshooting for you to check out as well.

expert reply by: Jameson C

0

Answer 1

CF on the dash of a 2012 Ram 1500 with the factory electric brake controller indicates "computer fault" and typically means the wiring isn't making a solid connection somehow but it can also indicate a problem internal of the factory…

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Answer 2

The flashing C on your Tekonsha Prodigy P2 Trailer Brake Controller #90885 sounds like there is corrosion on the brake output circuit of your vehicle 7-way. When the controller detects a load on the circuit (typically from the trailer brake magnets)…

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Answer 3

The code ".c." indicates that the boost feature is engaged or the trailer is connected. The best route to fix this issue is to trace the tow package wiring from the 7-way as far foward as possible, looking for any damaged sections. I would…

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Answer 4

The PL code on the Tekonsha P2, #90885, indicates that there is a power loss while you are stepping on the brakes. The first thing I would check is the red wire. Using a circuit tester like #PTW2993, test the red wire when you step on the brake. It…

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Answer 5

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 6

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 7

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Answer 8

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 9

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 10

Actually, the P3 now has the upgraded axis accelerometer like the P2. The Tekonsha P3 Trailer Brake Controller #90195, will work with both electric over hydraulic brakes on the trailer as well as electric brakes. It has a menu option on the display…

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Answer 11

We can get you everything you need for towing with your 2017 Toyota Sienna XLE. By plastic shield, I believe you are referring to the appearance panel underneath the Sienna, and that will have to trimmed a bit in each of the hitches available for the…

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Answer 12

The Redarc Tow-Pro Liberty #RED24FR is the way to go over the Elite #RED44FR as you get the nicer functions of the Elite at a lower price. The Elite has the ability to be the more preferred proportional style of controller as well as a time-delayed…

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Troubleshooting Flashing .C on a Prodigy P2 Brake Controller

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