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Mazda
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2002
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MX-5 Miata Base, Standard
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Repair and Diagnosis
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Engine Performance
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Engine Controls - Self-Diagnostics
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Diagnostic Tests
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DTC P0401: Exhaust Gas RECIRCULATION System Insufficient Flow Detected
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Possible Cause
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Possible Cause
EGR valve malfunction.
EGR boost sensor malfunction.
EGR boost sensor solenoid valve malfunction.
EGR valve base gasket improperly installed.
PCM malfunction.