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Malibu LS
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Different variant/trim
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Section 22 (Engine Controls And Fuel - 2.0L (LTG) - DTC P0335 To DTC P2635 And Diagnostic Information And Procedures)
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Diagnostic Information and Procedures
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DTC P0420: Catalyst System Low Efficiency
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Action Taken When the DTC Sets
Action Taken When the DTC Sets
WARNING:
This page is about a different variant/trim than selected.
DTC P0420 is a Type A DTC.