Is Computer Reprogrammed to Use P3 Brake Controller on 2011 Ford F-350 Instead of Factory Controller

Question:

I have a 2011 ford f350 when I replace the factory brake control with the p3 control you say there will be a fault code on my dash panel what if I dont go to ford and reprogram my computer. will there be any problems.? also if I do have my computer reprogramed and decide to go back to the original brake control will I need to go back to ford again for another program?

asked by: Doug B

Expert Reply:

We have an FAQ article on this subject which I have linked for you. You do not have to have the factory trailer brake control turned off by a Ford dealer if you do not mind seeing the fault code. But if you ever do get annoyed by it then the dealer would have to turn it off.

If you were to remove the P3, # 90195 from the truck then the dealer would have to turn the factory controller back on for it to work. In both cases, the computer is not being reprogrammed. They are just telling it to turn off the factory brake controller.

The reason the fault code appears is because the harness needed by the P3, # 3034-P, plugs into the same spot that the factory controller uses. I have included a link to the installation instructions for you to view.

expert reply by: Michael H