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Home >> Kia >> 2011 >> Soul Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) - 1.6L >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1) >> Inspection/Repair >> Component Inspection >> Catalyst Converter Check
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Catalyst Converter Check

  1. Catalyst converter visual check

    Check discoloration by overheating.

    Check deflection or crack (hole).

    Check noise.

  2. Check whether the catalyst converter is genuine.
  3. After erase the DTC, drive the vehicle more than 60 sec according to "Enable Conditions" shown in DTC DETECTING CONDITION CHART, then confirm the DTC.
  4. Is there something wrong?

    YES 

    Substitute with a known-good Catalyst Converter and check for proper operation. If the problem is corrected, replace Catalyst Converter and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage. Check for poor connections, and check the related circuit between ECM and component thoroughly. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

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