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p0603 code

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Old 05-12-2011, 10:29 PM
itsunday25 itsunday25 is offline
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p0603 code

ok i got a 1999 f 450 diesel check engine light is not on but it is showing p0603 code. and my exbpv is not closeing when i have thr e brake down or my high idel will not kick in and just the other day it did and after that nothing idk wats up can you guys help thanks.
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