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Home >> Scion >> 2005 >> xB Standard >> Repair and Diagnosis >> Engine Performance >> SFI System >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1) >> Monitor Strategy
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Monitor Strategy

MONITOR STRATEGY

Related DTCs P0420: Catalyst deterioration
Required Sensors/Components (Main) TWC
Required Sensors/Components (Related) HO2S, Intake Air Temperature (IAT) sensor, Mass Air Flow (MAF) meter, Crank-shaft Position (CKP) sensor, Engine Coolant Temperature (ECT) sensor
Frequency of Operation Once per driving cycle
Duration 90 seconds (30 seconds x 3)
MIL Operation 2 driving cycles
Sequence of Operation None