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2008
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SC 430
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Repair and Diagnosis
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Engine Performance
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Engine Control System
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SFI System
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DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430: Catalyst System Efficiency Below Threshold (Bank 2)
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Typical Malfunction Thresholds
Typical Malfunction Thresholds
TYPICAL MALFUNCTION THRESHOLDS CHART
Heated oxygen sensor (sensor 2) locus length
0.35 V or more (varies with A/F sensor locus length)
Frequency of the monitor
6 times