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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 147 (Engine Control System Diagnosis - 1.6L (2 Of 3)) >> DTC P0420-00: Catalyst System Efficiency Below Threshold (Bank 1) >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
TroubleShooting Condition Possible Cause
Main Action
  • Oxygen storage capacity (Deterioration of Catalytic efficiency)
  1. Exhaust system
  2. S2
  3. Catalyst converter
Prerequisite condition
  • Engine speed is between 1200 RPM and 3000 RPM
  • Engine load is between 20% and 75%
  • Catalyst temp. (model) is between 600°C (1112°F) and 850°C (1562°F)
  • Closed loop control
  • The time after engine starts has passed 260 seconds
Threshold value
  • Ratio of Actual OSC to Model OSC is lower than 1.0
Diagnostic Time
  • 1 sec
MIL
  • 2 Driving Cycle
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