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Old 01-15-2008, 03:50 AM
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code p0603

internal control mod kam error is this just a sensor or what truck wont start when the engine is cold and this code keeps coming up what do i need to do 03 f350 7.3
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Old 01-15-2008, 03:54 AM
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Are you running a tuner or have you disconnected your batteries lately? If so that will throw that code. Have you checked your glow plug relay or gp's?
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Old 01-15-2008, 03:54 AM
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have you been runing a programmer or plug in chip of any kind, if so have you tried to change programs , or anything , its possible to have wiped the pcm mmemory, need to know that first
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Old 01-15-2008, 03:58 AM
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i have a super chip programmer yes i have changed programs
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Old 01-15-2008, 03:59 AM
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no i have not checked gp relays or gps
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Old 01-15-2008, 04:15 AM
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if you changed programs , that will give you that code , you may have another issue , also are you sure when you changed programs , was it allowed to finish correctly
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Old 01-15-2008, 04:17 AM
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yes. but i changed programs last week and this started yesterday morning
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Old 01-15-2008, 04:19 AM
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i also cleared the dtcs 3 times and this keeps coming up
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Old 01-15-2008, 04:25 AM
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thats gonna be a tough one ,i guess its possible for the pcm to have taken a dump, its few and far between you see that, does the wait to stat light come on when the key is cycled
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Old 01-15-2008, 04:27 AM
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yes it does if i set it back to stock might that work
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