My 2017 F350 6.2 gas truck with 71,000 miles decided to throw 9 CELs at me last week. The codes are as follows, P0013, P0023, P0135, P0141, P0155, P0161, P0443, P0446, P0456. There were more but some did not come back immediately after clearing the codes. I've taken the truck to my Local Ford dealership, and it's got their techs scratching their heads. Help please!!!

 

When we et a listing of codes some related and some unrelated as seems to be the case here, what these codes all have in common is their ground. Wherever they get their ground , could be from sheet metal or from battery neg cable . There is evidently NO GROUND available. Start at the battery negative post and check every ground you can see.. Checking them means removing cleaning and reinstalling the connection. Looking at them does nothing.!
Be sure to verify the ground to the PCM.

 

Thank you for your response... I was thinking the very same thing, unfortunately I have no idea where to start. I've searched all over the web for a pin out diagram for the pcm so I could check for grounding issues but I have had zero luck.

 

Tested all 4 grounds to PCM, all tested good with little to no resistance.

 

Hi Ryan,
Just a reminder,
If you have only one strand of wire the resistance reading will read 0 ohms. If you were to run current through the wire it could get warm or hot because one strand is not enough to permit good circuit function. That is why we use voltage drop testing , the circuit under load carrying the intended current.
Sometimes several components will share a common ground connection. A wiring diagram will usually show where the grounds are connected , but not always the exact location..
I have some reservations about the dealership scratching their heads. Maybe they don't have a good electrical man available.
Try another dealership service dept.