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Home >> Buick >> 2006 >> Lucerne CXS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 4.6L - DTC P1400 To DTC P2444 >> DTC P1404 >> DTC Descriptor
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DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P1404 Exhaust Gas Recirculation (EGR) Closed Position Performance

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