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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 638 (Engine Controls Diagnosis - 3.6L (Ly7) (DTC P0135 To DTC P0420)) >> Diagnostic Trouble Codes >> DTC P0420 >> DTC Descriptors

DTC Descriptors

WARNING: This page is about a different car, the 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic procedure supports the following DTC.

DTC P0420 Catalyst System Low Efficiency

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