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Home >> Mazda >> 2000 >> MX-5 Miata Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0401: Insufficient EGR Flow Detected >> Condition

DTC P0401: Insufficient EGR Flow Detected: Condition

DTC is set when the difference in intake manifold pressure between open EGR and closed EGR is too small. Possible causes are:

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