Prodigy P2 Electronic Trailer Brake Control Error Code E.R.

Question

Question:

What does a flashing Er reading mean?What should I do about it?

asked by: Hugh S

0

Expert Reply:

That's not a good sign. That means there's an internal problem with the controller and it needs to be replaced. You might try unplugging the controller for a minute and plugging it back in to see if resetting it helps, but otherwise it's time to replace it.

expert reply by: Jameson C

0

Scotti

6/23/2026

These controllers are only good for about 1 year expect er code at $250 plus you think they would address this problem

Jameson C.

6/23/2026

@Scotti P2 in our experience was super reliable but at this time they aren't available.

Answer 1

Sounds like you have a Tekonsha Primus IQ brake controller part #TK90160. I attached a link to this page that has the owners manual/install instructions and then for a replacement wiring harness you'd want the part #20127.

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Answer 2

I attached a picture that has a chart with all of the error codes for the Prodigy P2 part #90885 that you referenced. I am not sure what you mean by dashes on the display so hopefully the chart helps you. Feel free to email back with pictures of the…

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Answer 3

The N.C code on the Tekonsha Prodigy P2 Trailer Brake Controller #90885 means that a trailer is not connected which is usually caused by the controller not getting enough power. This can usually be fixed by cleaning the connection, checking the…

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Answer 4

According to the troubleshooting directions, the Er code that is showing on your Prodigy brake controller indicates that there is an internal brake control problem. There is nothing that can be done to fix this and the recommendation is to return the…

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Answer 5

To install your P2 Brake Controller part #90885 in your 2014 Ford F-150 with the tow package all you need is the correct install harness, part #22292. The #3035-P would not work for you so I cannot recommend it for you. To see how the brake…

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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

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 8

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 9

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 10

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

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Answer 11

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 12

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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Prodigy P2 Electronic Trailer Brake Control Error Code E.R.

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