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Old 07-16-2012, 01:27 PM
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P0703 Code

I am getting ready to go on a trip this week & my truck started acting funny. I have a 2008 F350 4X4 with EGR by pass, exhaust filter removed (test tube) & black max programmer other than that its stock. The problem is the cruse will not set when the truck throws a code it says P0703 Brake switch B Circuit I have replaced the break light switch and checked all bulbs & plugged in my trailer & all is good so what is my problem. some times if I pull over shut the truck off then start it again all is good. There is NO check engine light on

Last edited by hammer67; 07-16-2012 at 01:41 PM. Reason: ADD
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Old 07-18-2012, 06:42 PM
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Do a search on the diesel stop somone had the fix on there
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Old 07-18-2012, 07:21 PM
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Thanks for the info. This morning I did a search for P0703 & they said it was the brake switch under the hood. I replaced the switch & life is good again.
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