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Mazda
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2003
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Protege ES, Automatic
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DTC P0401: EGR System - Insufficient Flow
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Possible Causes
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Possible Causes
EGR boost sensor malfunction.
EGR boost sensor solenoid valve malfunction.
EGR valve gasket malfunction.
EGR valve malfunction.
PCM malfunction.