Brake Controller is Displaying Overload OL Error Code When Trailer Isnt Connected

Updated 07/29/2015 | Published 07/28/2015

Question:

If the truck is not hooked to the camper, why would the red light say OL?

asked by: Larry B

Expert Reply:

The most common reason you'd have an Overload error code on a brake controller when the trailer isn't connected is a corroded or damaged trailer connector on the truck. If you can see green or white corrosion on the pins of the 7-way, there's a good chance that the corrosion has spread to the interior of the connector, and caused a short circuit. Clean or replace the trailer connector as needed.

If you need a replacement trailer connector, I'd be happy to make a recommendation if you'd reply with the year, make and model of your truck.

I've linked you to some FAQ articles that you might find helpful.

expert reply by: Mike L