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Home >> Kia >> 2020 >> Soul GT Line Turbo >> Repair and Diagnosis >> External Pages >> Different car >> Section 103 (Engine Control System Diagnosis - 1.6L (4 Of 6)) >> DTC P0420-00: Catalyst System Efficiency Below Threshold (Bank 1) >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Check catalyst Oxygen Storage Capacity (OSC)
  • Exhaust system
  • S2
  • Catalyst converter
  • Out of range ECT sensor
  • Exhaust manifold
  • High fuel pressure
  • Incorrect connection
  • Misfire
  • Injector
  • EGR system
Enable Conditions
  • Engine speed is between 1200 and 3000 RPM
  • Engine load is between 18 and 90%
  • Catalyst temperature (model) is between 600 and 850°C (1112 and 1562°F)
  • Catalyst mass flow is between 40 and 140kg/h
  • Fuel system status is closed loop
  • Change amount of catalyst temperature (model) is less than 40°C (104°F)
  • Change amount of catalyst mass flow is 45kg/h
Threshold Value
  • Ratio of actual OSC to model OSC is less than 1.0
Diagnostic Time
  • 15s
MIL ON Condition
  • 2 driving cycles