SOURCE: what is a tbc fault on a 2006 ford f350 6.0
That is your trailer brake controller that is built into your dash. If you are hooked up to a trailer it could mean you are losing your connection or ground to the trailer. If you are not connected to a trailer it means there is a problem with your brake controller possibly a short in the wiring caising the fault code.
SOURCE: tbc fault trailer disconnected message 05 f350
check the rear plug on the bumper they are prone to water damage and corrosion, if you unplug the 7-way and four way plug from the body connector and test drive the vehicle this will tell you if the plug is the source of the problem.
SOURCE: If my f350 reads TBC
not sure if you need to change it but 05 and 06 f350 are haveing a lot of issues with this you might want to see if they have a recall....Sorry I cant help futher
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