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Home >> Suzuki >> 2006 >> Grand Vitara Premium, RWD, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> Diagnostic Information And Procedures >> DTC P0420/P0430: Catalyst System Efficiency Below Threshold (Bank-1/-2) >> DTC Detecting Condition and Trouble Area
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DTC Detecting Condition and Trouble Area

DTC DETECTING CONDITION CHART

DTC detecting condition Trouble area
Correlation coefficient that is calculated on the basis of A/F sensor signal and HO2S-2 signal exceeds specification when switched from RICH to LEAN in A/F diagnostic frequency under prescribed running condition.
(2 driving cycle detection logic, monitoring once per driving cycle)
  • WU-TWC converter
  • Exhaust system
  • A/F sensor
  • HO2S-2
  • ECM