Troubleshooting Prodigy Brake Controller that Flashes SH Code

Question

Question:

controller flashes what appears to be an 5.h code but half of the numbers are missing on the display could this be a bad controler

asked by: Jeff

0

Expert Reply:

The error code you are reading indicates that there is a short circuit somewhere in the brake outupt circut on your trailer. Most likely, there is a pinched wire or at some point the wire insulation has cracked or been worn to the point where the copper wire is contacting the trailer frame or some other metal part. Start at the trailer connector, making sure that it's not corroded or damaged, then work your way back to the brake magnets, examining the wire as you go.

The controller can also be at fault as they can go bad.

Testing the brake controller is fairly easy. Sever the blue brake output wire near the brake controller leaving enough room to reconnect it and then apply the manual slide. Using a circuit tester like the Quickee Tester, part # 3808, you should get output to the controller side of the wire you severed. If the manual slide activates the trailer brake output wire properly, try the brake pedal. If the brake pedal activates the brake output properly also then the problem is farther back either in the vehicle wiring or on the trailer.

If either the brake pedal or the manual slide are not functioning properly you will need to test the wires going into the brake controller. Make sure you have power entering the brake controller on the black wire. On the red wire you will only want power when the brake pedal is pressed.

If there is power on the red wire before the brake pedal is pressed you have connected the red wire from the brake controller to the wrong circuit. You would then need to find the brake switch wire that has power ONLY when the brake pedal is activated.

If these connections check out and the brake controller is properly grounded then there is possibly a problem inside the brake controller.

I am including a link to a video that will show you how to test the wiring on a brake controller.

expert reply by: Jameson C

0

Answer 1

The first error code, SH, you are seeing on the Prodigy Brake Controller (instructions linked below) means the brake wire sees a short circuit during idle condition. The second code, OL, indicates an overload condition during operation. For the first…

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Answer 2

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Answer 3

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Answer 4

There are many things that can affect the voltage on the brake output wire from your brake controller to your trailer brakes such as the power setting on your brake controller, how you are testing the wire and if you are testing it with the brakes or…

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Answer 5

If your trailer has 7 wires running all the way back to the brakes, then yes, you can tap into the existing wiring. Each of your new brakes will have two wires for the brake magnet. One wire is for 12 volt power to the brake magnets and the other…

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Answer 6

The ER code on a Reese brake controller typically indicates an internal problem that can't be fixed and requires replacing the controller. Since yours is still working normal I'd say that you are probably on borrowed time with it and will…

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Answer 7

It sounds like there could be a problem with the brake controller or the connections going to it. The first thing you will want to check is to make sure the controller is getting power. Use a circuit tester such as #PTW2993 to test the black wire…

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Answer 8

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Answer 9

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Answer 10

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Answer 11

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 12

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Troubleshooting Prodigy Brake Controller that Flashes SH Code

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