Troubleshooting OL Code on a Tekonsha Primus IQ Brake Controller

Updated 08/24/2015 | Published 08/23/2015

Question:

Im getting the o.L code I have the primus iQ

asked by: Larry

Expert Reply:

The OL (overload) error message on your Tekonsha Primus IQ Trailer Brake Controller # TK90160 tends to suggest that there is a problem in your trailer's brake circuit wiring. You can start by inspecting both the vehicle and trailer connectors for any signs of corrosion or trapped dirt that could cause two circuits to become bridged together. Check both sides of each connector and clean/replace as needed.

Also check the trailer's entire brake circuit wire from the trailer connector all the way along the wiring (looking for signs of cracked or worn insulation) back to each brake assembly. If the brake circuit wire has any damage this could cause a short that would lead to the overload and short circuit error messages. Repair or replace any damaged wire.

expert reply by: Jameson C