TBC means Trailer Brake Controller fault.Check for moisture/water in the trailer plug connector at the back of your truck. Water/moisture will cause TBC error codes. Look for moisture at all connections to the plug and inside the plug.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.
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It means either
A) you have a bad ground on your trailer. Or
B) your cable on your trailer is too short and causing it to pull out of the plug or
C) you have a short in the factory trailer harness wiring or the plug is gunked up.
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get this possibilities checked.It will help.Thanks.Helpmech.
Trailer fault with no trailer hooked up means a internal short in the control unit itself remove & replace will fix this problem
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: 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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