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Home >> Kia >> 2017 >> Cadenza Technology >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (4 Of 6) >> DTC P0420-00: Catalyst System Efficiency Below Threshold (Bank 1) >> Component Inspection >> Confirm Part Inspection

Confirm Part Inspection

  1. Does the Catalyst Converter operate properly? (Check variation)

    YES 

    NO 

    • Carefully re-do this troubleshooting guide steps.
    • If no problems were found with the circuits or connectors, replace the catalyst Converter and go to "Verification Of REPAIR " procedure.