DTC Detecting Condition and Trouble Area
P0420 DTC DETECTING CONDITION CHART
| DTC detecting condition | Trouble area |
|---|---|
| P0420: Catalyst System Efficiency Below Threshold Ratio of integrated value of HO2S output variation per integrated value of A/F sensor output variation is more than specification while vehicle is running after warmed up. (2 D/C detection logic) |
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