No Trailer Brakes On 2016 Nissan Frontier Using Tekonsha P3 Brake Controller

Updated 11/17/2025 | Published 12/02/2024

Question:

I have a 2016 nissan frontier. The trailer brakes are not working at all and there is no power at the rear of the truck on the electric brake pin when brake is applied Tekonsha p3 controller hooked into factory harness

asked by: Heath

Expert Reply:

Hello Heath, thanks for reaching out. The Tekonsha P3 # 90195 uses an internal inertia sensor which applies the trailer brakes when it senses deceleration. If you are testing the controller with the vehicle parked, the trailer brakes will not apply when the brake pedal is pressed. They should activate when the manual override is pressed though. If the brakes are not applying with the manual override or with the vehicle in motion it could be because of a missing/blows fuse. Check your owner's manual for fuse type and location and make sure all fuses related to the tow package are in good shape and inserted correctly.

expert reply by: Jesse M

Jesse M.

11/17/2025

Hey Heath, did checking the fuses and testing the manual override on your Tekonsha P3 get the trailer brakes working again? Knowing what fixed it could really help others troubleshooting their Frontier setups.