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Home >> Cadillac >> 2005 >> DeVille Protection Series >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (DTC P0138 To P0412) >> Diagnostic Information & Procedures >> DTC P0401 >> DTC Descriptor

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0401 Exhaust Gas Recirculation (EGR) Flow Insufficient

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