99psd p0603 code - Ford Powerstroke Diesel Forum
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Old 01-04-2007, 12:31 PM
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99psd p0603 code

99psd pulls p0470 and p0603 found p0471 what is p0603 please help
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Old 01-04-2007, 12:35 PM
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if you have a programmer or chip of any kind and take it out or change something ,it will set that code ,disregard that code ,run diag for other code
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Old 01-08-2007, 07:15 PM
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heres what that code is. Chips will cause this one big time like scott said.

P0603 PCED Internal control module KAM Open PCM pin, disconnect B+
error faulty PCM
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Old 01-09-2007, 06:21 AM
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as scott said....anytime you put a chip or programmer in one of these trucks its gonna set a p0603.....its normal for it to be there
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