TBC Fault... - Ford Powerstroke Diesel Forum
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post #1 of 6 Old 09-29-2010, 02:41 PM Thread Starter
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TBC Fault...

Hey guys, so a few weeks ago I was towing my work trailer (16' enclosed trailer) and I felt as if my brakes on the trailer were sticking a few times... I brought it back to the place I got it and they looked it over, and we discovered that my factory trailer brake controller was locking the brakes up slightly. We then just unhooked the trailer brakes at the battery of the trailer for a temporary solution.

Ever since then, whether I am towing or not I get the TBC fault code on my dash CONSTANTLY... My blinkers do not work when the TBC fault code is up, and now my AC is only working every once in a while... I don't know what to do???? Any help would be appreciated...

PS it's an 05 F250 CC SB... Thanks guys
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post #2 of 6 Old 09-29-2010, 02:51 PM
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Check your fuses. But sounds like your trailer places solution caused some issues with your PCM.

All they had to do was change two wires around on the trailer.

Take the truck to them and tell them to fix it right

Email: Dave@powerstroke.org
2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
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post #3 of 6 Old 09-29-2010, 02:51 PM
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Quote:
Originally Posted by Dave View Post
Check your fuses. But sounds like your trailer places solution caused some issues with your PCM.

All they had to do was change two wires around on the trailer.

Take the truck to them and tell them to fix it right
If they dont and Im not busy saturday I might be able to head to rochester and check it out for you

Email: Dave@powerstroke.org
2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
2012 F150 Crew Cab Ecoboost stock for now-Totaled March 12 2015
2006 F250 ECSB Lariat 4x4

Leveling kit, 315/70/17 Kelly TSRs on Method race wheels
ARP studs and OEM gaskets done by Renegade Diesel
ECM and Atlas 40 FICM tuned by Bill at PHP SCT tunes by Truck Source Diesel. Gearhead, Innovative, Wildman and Tyrant diesel
Flowmaster/MBRP Hybrid Exhaust
Edge Insight CTS
Coolant filter
Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
Dually LED lights from Stealth Automotive/Xpedition Outfitters
No Limit Fab 6.0 Cold Air Intake
http://www.bulletproofdiesel.com/default.asp
http://nolimitfabrication.com/
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post #4 of 6 Old 09-29-2010, 03:34 PM Thread Starter
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Even my wipers don't work when the TBC fault is displayed...But it seems like something is almost loose because as I am driving it will beep and display TBC Fault...Then go away, then come back...It sucks...
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post #5 of 6 Old 09-29-2010, 03:43 PM
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Check the 7way harness at the back of the truck. They probably knocked it loose when they checked everything over

Email: Dave@powerstroke.org
2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
2012 F150 Crew Cab Ecoboost stock for now-Totaled March 12 2015
2006 F250 ECSB Lariat 4x4

Leveling kit, 315/70/17 Kelly TSRs on Method race wheels
ARP studs and OEM gaskets done by Renegade Diesel
ECM and Atlas 40 FICM tuned by Bill at PHP SCT tunes by Truck Source Diesel. Gearhead, Innovative, Wildman and Tyrant diesel
Flowmaster/MBRP Hybrid Exhaust
Edge Insight CTS
Coolant filter
Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
Dually LED lights from Stealth Automotive/Xpedition Outfitters
No Limit Fab 6.0 Cold Air Intake
http://www.bulletproofdiesel.com/default.asp
http://nolimitfabrication.com/
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post #6 of 6 Old 10-01-2010, 09:33 AM
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I bought my truck with the TCB fault displaying. It has nothing to do with the other electric components on your truck. You have other issues, probably to do with the fuse box itself, leading wires to the fuse box, etc.
I've towed with the TCB showing and I can tell the brakes are not working, but in tow mode, it hasn't been an issue with my F350 on larger braked axles and only towing a 6k trailer/jeep. I drive defensively when in tow mode as well. To make it not show, you need to push the speed gauge button.

I do have an aftermarket controller to toss in, just haven't gotten around to it just yet. Soon. Soon.

Jagular
Lenexa, KS

05 F350 CC C&C 4x4

No longer own
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