TBC Fault code?? - Ford Powerstroke Diesel Forum
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Old 03-07-2007, 06:42 PM
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TBC Fault code??

I have a code coming up on the dash saying TBC Fault. What does this mean? Thanks.
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Old 03-08-2007, 05:23 AM
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Could be this:

Various Electronic and Driveability Symptoms and Codes:
2005 F-Super Duty trucks built before 5-11-05 may exhibit various electronic-related symptoms due to loose/miss-installed fuses in the engine compartment fuse box. These symptoms may be intermittent. The fuses should be inspected to verify they are installed into the terminals in the fuse box and not along side the terminals.
Fuses--Symptoms
#9, 20 amp: Trailer turn signals inoperative
#10, 10 amp: Check Engine Light; Codes P1633, P0446
#11, 10 amp: Speedo bounce, ABS light, Cruise control inop; Codes U1900, U2023, P0500-P0503
#12, 2 amp: Cruise control inop, TBC Fault displayed, chime; Code C2803
#13, 15 amp: Day time running lamps inop
#15, 15 amp: Crank/no start, bucking, stall; Codes P2614, P2617, P1378
#17, 10 amp: A/C inop or not cooling
#18, 10 amp: Crank/no start, bucking, stall; P2614, P2617, P1378, P0611
#20, 10 amp: Trailer back up lamp inop
TSB 05-11-14

Check fuse #12.
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Old 03-08-2007, 07:15 AM
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Thanks for the info. I did have the dash apart the other day just enough to get the after market stereo out to check for a loose speaker wire?? Maybe I nocked a fuse loose??
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Old 01-06-2009, 06:31 PM
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I started my truck, warmed it up, and I was driving with no problems but when I came to a stop the truck shut down. I waited about two minutes at most, started my truck and I drove on. This has happened numerous times wether I am coming to a stop or if i am already stopped. On a couple occasionas when I try to restart my truck the TBC light is flashing. I know for a fact that this is not a moisture problem because i have already checked...does anyone have any suggestions? you can contact me at ral.ent@live.ca I would really appreciate the help
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Old 05-11-2010, 10:53 AM
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i was told it was a trailer brake controller issue
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Old 07-14-2010, 09:23 PM
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My buddy is having the same problem on his 05 6.0. We were out driving and he got on it then it shot off all of a sudden and the turbo barked real loud and now it wont start at all. It says on the dash TBC Fault. I unhooked both battery's to try to restart it or clear it but that didnt't work. Any suggestions??
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Old 07-15-2010, 03:19 AM
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The TBC is the trailer brake controler. There have been a number of issues with the TBC.
By most accounts it is internal circuitry problems of the controler. There was also cases of moister getting in the firewall plug of the TBC circuit.
I think you have another issue going on as the TBC has nothing to do with engine control or function. [This is for F250Stroker08]

Last edited by dannyboy950; 07-15-2010 at 03:23 AM.
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Old 07-15-2010, 05:04 AM
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Whoa Guys the TBC fault has nothing to do with your engine at all.

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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Old 07-15-2010, 12:00 PM
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Thanks guys. I didn't think that would be causing the truck not to start. It just happened to pop up when the truck shut off and wouldnt start. Just wanted to check and see what it meant.
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