Fault in Trailer Wiring

[acadianbob]

Just started getting this message every time I start my F150. No trailer is attached. Any ideas?

[rockfordroo]

I'd check inside the 7-pin plug. Might be dirty, allowing a small amount of current to pass across the pins.

[cascade]

Moisture in the plug receptacle. Common problem on Ford truck forums. Dry it out and seal the back of the receptacle.

[acadianbob]

Thanks. Live on a dirt road. And it has been very wet, muddy, and snowy here. I'll give that a try.

[Witch Doctor]

Originally Posted by acadianbob

Thanks. Live on a dirt road. And it has been very wet, muddy, and snowy here. I'll give that a try.

Good luck, I hope that is it, I have running lights that blow 20 amp fuse since I bought the 5er in 2012, the dealer plus the factory tried to fine it, both gave up now I just live with auto reset 20 amp fuse