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Home >> Buick >> 2007 >> Rainier 5.3 M, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 5.3L - DTC P0351 To DTC P3449 >> DTC P0420 or P0430 >> DTC Descriptors
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DTC Descriptors

DTC P0420

Catalyst System Low Efficiency Bank 1

DTC P0430

Catalyst System Low Efficiency Bank 2

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