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Home >> Suzuki >> 2006 >> Aerio Base, FWD, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> DTC P0420: Catalyst System Efficiency below Threshold >> 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
While running under conditions described for "DTC Confirmation Procedure", output waveform of HO2S-1 becomes similar to output waveform of HO2S-2.
(2 driving cycle detection logic)
  • Exhaust gas leak
  • Three way catalytic converter malfunction
  • HO2S-2 malfunction
  • HO2S-2 circuit malfunction
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