Tekonsha Prodigy P2 Trailer Brake Controller Showing OL, PL and SH Error Codes

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Question:

I am using a prodigy P2 proportional controler, and having 2-3 trouble codes. It started with code OL,PL. Last time I used it I got a SH code. I have checked my grounds,replaced 7 way plug, replaced all 4 wheel brake assys,checked connectors at controler in vehicle. Any ideas?

asked by: brian n

0

Expert Reply:

First, lets start by resetting the Prodigy P2. With the trailer disconnected from the vehicle, disconnect the brake controller by unplugging the harness from the rear of the unit, and plug it back in. The display will show NC for 15 seconds, and then show two dots.

The OL error code indicates that the Prodigy is drawing too much current. This is usually caused by a short on the brake output wire on the trailer or low resistance to ground on the brake wire. Look for any pinch points, or worn or cracked insulation that would allow the output wire to short out on the trailer frame. Check the ground leads that exit each brake assembly, make sure they are securely grounded to bare metal on the trailer frame. Make sure these grounding points are not corroded, as well.

The PL code will be displayed when the Prodigy loses voltage on the black wire while either the brake pedal or the manual lever is being applied. This may be caused by a loose connection or I have also seen a faulty circuit breaker case this as well.

The SH code can also be caused by a short on the output circuit. The most likely cause is dirt or corrosion build up in the trailer connectors on the vehicle and trailer. But, it could also indicate a problem with the rake magnets. I have included a link to an FAQ on testing magnets for you and a link to the installation instructions for the brake controller.

I'll link you to our Brake Controller Troubleshooting FAQ article.

expert reply by: Mike L

0

Jeff R.

2/25/2020

My Prodigy jumps from C to OG to 0.0. Ive made sure several times the controller is wired correctly. At a loss at this point.

Reply

Chris R.

2/26/2020

Are these error codes popping up as soon as you start the truck or only when braking? The only thing I can think of off the top of my head is that for some reason the unit isn't getting adequate power. I know you made sure the wiring is correct, but I would pay close attention to the black power wire and white ground wire. Make sure the power wire is securely attached to the battery and that the white wire is properly grounded. There seems to be some kind of interruption going on with this circuit. Let me know what you find and we can go from there.

Reply

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

Since the trailer was off of the ground it would not take much voltage to stop the wheels from spinning so they may be getting power but they may not be getting enough power due to a short or wiring issue. But 9 times out of 10 weak trailer brakes…

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Answer 3

The correct brake controller install harness to use with your P2 is the part #3020-P. Since this is a proportional controller it will be difficult to see voltage at the output pin when the brakes are applied since the controller is designed sense…

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Answer 4

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 5

Lance does have a proprietary plug, but many customers see a standard 6-way or 7-way round and notice it doesn't fit their factory 7-way as well. I've attached an article to help if you have one of the 7-way or 6-way round connectors which we…

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Answer 6

Since your brakes will lock up when pulling the breakaway pin that would indicate that the problem is not on the trailer side of the equation and would be on the tow vehicle. Testing the brake controller is fairly easy. Sever the blue brake output…

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Answer 7

You are correct, you should only be getting output when the brake is applied, or the override switch is activated. It sounds like the controller might be bad, but to make sure, you should probably bench test it before tossing it. Use a circuit…

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Answer 8

The integrated brake controller of a 2008 Ford truck is not compatible with electric over hydraulic brakes. Whether or not we have an adapter that would allow it to work really depends on the actuator the trailer has. Not all actuators have adapters…

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Answer 9

Your brake controller should be getting 12 volts of power going into the brake controller. The wire that feeds power to the brake controller is the Black wire. You can test this wire by using a multimeter part #PT89ZR. The amount of power coming out…

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Answer 10

No problem, we can get this sorted out. The first thing I want you to look at are the centers of the axles. Round trailer axles have a bow in them so the centers of the axles should be higher than the ends. When weight is put on them they straighten…

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Answer 11

Most brakes also require a (break-in) period. Dexter says to get up to about 20-30 mph and use the manual override several times. They may also feel weak breaking because it is recommended to let the brakes (seat) into the hub for the first 200 miles…

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Answer 12

Your trailer brakes will still work with the assemblies mounted upside down where the magnet is above the spindle, but from the customers we know who have done this we have found that the stopping power won't be as strong as if they were mounted…

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Tekonsha Prodigy P2 Trailer Brake Controller Showing OL, PL and SH Error Codes

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