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Home >> Lexus >> 2009 >> IS F >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control (SFI) System (Diagnostic Codes (P0230-P1276)) >> SFI System >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430: Catalyst System Efficiency Below Threshold (Bank 2) >> Confirmation Driving Pattern
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Confirmation Driving Pattern

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Performing this confirmation pattern will activate the catalyst monitor. This is very useful for verifying the completion of a repair.

Fig 1: Confirmation Driving Pattern
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