How to Diagnose a Teksonsha TK90160 That is Showing P.L. Error

Question:

Teksonsha primus 90160 displays P.L. but how do I rectify this code?

asked by: Wayne H

Expert Reply:

The P.L. code on your Tekonsha Primus IQ # TK90160 means there is a power interruption while the brake pedal is being depressed. This actually happens fairly often and all you need to do is check your ground connections and power supply wire.

You will want to make sure the ground is connected to bare, unpainted metal, but a quick and easy way to test is to connect the ground directly to the negative terminal on the battery. If this fixes the issue, it's definitely the ground connection that was bad. If it is still doing it, you will need to trace the power wire as there is most likely a short.

expert reply by: Lazer S