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Home >> Chevrolet >> 2006 >> Impala Police, 3.5 N >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 3.5L - DTC P0010 To DTC P0420 >> DTC P0420 >> DTC Descriptor

July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

DTC Descriptor

DTC P0420: Catalyst System Low Efficiency Bank 1

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