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Home >> Pontiac >> 2005 >> Grand Prix Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 3.8L - DTC P0406 To DTC P1111 >> DTC P0420: Catalyst System Low Efficiency Bank 1 >> DTC Descriptor

DTC Descriptor

This diagnostic procedure supports the following DTC.

DTC P0420 Catalyst System Low Efficiency Bank 1

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