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Home >> Lexus >> 2008 >> IS F >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - SFI System Diagnostics (2 Of 4) >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430 Catalyst System Efficiency Below Threshold (Bank 2) >> Monitor Strategy
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Monitor Strategy

MONITOR STRATEGY CHART

Related DTCs P0420 Catalyst Deterioration
P0430 Catalyst Deterioration
Required Sensors/Components (Main) Air fuel ratio sensor and heated oxygen sensor
Required Sensors/Components (Related) Intake air temperature sensor, mass air flow meter, crankshaft position sensor and engine coolant temperature sensor
Frequency of Operation Once per driving cycle
Duration About 30 seconds
MIL Operation 2 driving cycles
Sequence of Operation None
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