Hey guys kind of stuck. I have a 2013 F150 screw with a 5.0. I was trying to install a aftermarket subwoofer. Got everything hooked up and amp went into protection mode. Checked for short to ground at amp and sure enough there was. Disconnected everything and started testing at the battery. Positive terminal short to ground. Disconnected engine fuse panels and one if the leads is short to ground and the others are not. Hooked up forscan and the only code I have is B10F1 for the ignition. Is it possible this could cause a short bad enough to put a amp in protection mode? Went down the BCM rabbit hole but seems like everyone had U codes and other issues. Everything in my truck works as it should. I'm at a loss besides tearing Everything down and testing individual circuits. If anyone can point me in a direction I would greatly appreciate it.

 

I can't answer your question about the ignition switch code, but it needs to be addressed at some point I guess.
I would remove the positive cable at the battery.
Go to the sub and disconnect the power cable that is coming from the battery and check it from the end to ground.
You should infinite resistance.
If you are turning on the sub with power from a fuse that is hot when the key is on, do the same thing with that power wire also.( disconnect it from where ever you are picking up power and test)
As I'm writing this you may want to read up on the sub, could it be in protect mode due to crossed speaker wires?

 

Everything was disconnected upon testing. Amp and battery was disconnected. Have a closed circuit from positive terminal to ground on the body itself.

 

Did you take the sub power wire off from the positive cable so that it's on its own at both ends and test it?
Just wondering if it got cut during installation.
If it off and tested good, you probably have to start pulling fuses under the hood and see if ground clears
It sounds like this could take awhile.
Another thought on the ignition switch would be to unplug it at the control module in the steering colum, just to isolate it.
Its not real easy to get to it though.

 

Yes it was completely disconnected. I even disconnected from the engine fuse panel. I think the lead to the BCM is showing the short. Definitely could be the ignition just seems I would have troubles on a normal basis besides trying to hook up a amp.

 

My stereo was all stock in my 12 and has always shown that same fault

 

How about powering the sub from the battery on its own as a test and see if it faults, you could use any size wire just to turn it on and see if it faults.
Also I guess you could pull connectors on the BCM to better isolate the short maybe.
Post this problem in audio and stereo section would probably get you more help.