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Home >> Pontiac >> 2006 >> GTO Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.0L - DTC P0136 To P0446 >> DTC P0420 or P0430 >> DTC Descriptors

DTC Descriptors

This diagnostic procedure supports the following DTCs:

DTC P0420 Catalyst System Low Efficiency Bank 1
DTC P0430 Catalyst System Low Efficiency Bank 2

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