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Home >> Kia >> 2009 >> Amanti >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures (2 Of 2) >> DTC Troubleshooting Procedures >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1) >> Monitor Scan Tool Data
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Monitor Scan Tool Data

  1. Check DTC Status
    1. Connect scan tool to Data Link Connector (DLC).
    2. IG "ON".
    3. Select "Diagnostic Trouble Codes (DTCs)" mode, and then Press F5 (INFO) to check DTC's information from the DTCs menu
    4. Read "DTC Status" parameter.
      Fig 1: Scan Tool Screen Display - DTC
      G05116408Courtesy of KIA MOTORS AMERICA, INC.
    5. Is "Present" Fault displayed?

      YES 

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

      NO 

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