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Home >> Scion >> 2009 >> tC Automatic >> Repair and Diagnosis >> Engine Performance >> 2AZ-FE Engine Control System >> SFI System >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1) >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

TYPICAL MALFUNCTION THRESHOLDS CHART

Oxygen Storage Capacity (OSC) of Three-Way Catalytic Converter (TWC) Less than 0.07 g