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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1991 (Engine Controls And Fuel - 3.6L (LCS) - DTC P0192 To DTC P0629) >> DTC P0420 or P0430 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The ECM determines that the efficiency of the catalyst has degraded below a calibrated threshold for greater than 4 seconds.

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