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Home >> Lexus >> 2009 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0351-U0001) - Circuit Tests) >> SFI System >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430: Catalyst System Efficiency Below Threshold (Bank 2) >> Typical Malfunction Thresholds
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Typical Malfunction Thresholds

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
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