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Mazda
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2003
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6 i, Standard
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls [Self-Diagnostics 2.3L]
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Diagnostic Tests
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DTC P0401: EGR Flow Insufficient Detected
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Possible Causes
Possible Causes
Possible causes are:
EGR boost sensor malfunction
EGR boost sensor solenoid valve malfunction
EGR gasket malfunction
EGR valve malfunction
PCM malfunction