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Home >> Kia >> 2006 >> Rio Base, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> DTC Troubleshooting Procedures (2 Of 2) >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1) >> DTC Description

DTC Description

If amplitude of B1S2 is over 0.5 voltage during 60 sec under enable conditions, ECM/PCM sets DTC P0420.