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Home >> Kia >> 2018 >> Soul Base, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 1.6L (2 Of 3) >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1) >> Component Inspection >> Visual Inspection
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Visual Inspection

  1. Check discoloration due to over-heating.
  2. Check deflection or cracks (holes)
  3. Check noise.
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