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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls And Fuel - 2.0L (LTG) - Diagnostic Information And Procedures (P0335 - P26C8) And Symptoms) >> Diagnostic Information And Procedures >> DTC P0420: Catalyst System Low Efficiency >> Conditions for Setting the DTC

Conditions for Setting the DTC

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The ECM determines that the efficiency of the catalyst has degraded below a calibrated threshold.

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