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Home >> Lexus >> 2019 >> ES 350 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FKS) - Diagnostic Codes (05 Of 10) >> SFI System >> DTC P0420-00: Catalyst System Efficiency Below Threshold Bank 1; DTC P0430-00: Catalyst System Efficiency Below Threshold Bank 2 [06/2018 - 08/2021] >> Monitor Strategy
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Monitor Strategy

Related DTCs P0420: Catalyst deterioration (bank 1)
P0430: Catalyst deterioration (bank 2)
Required Sensors/Components (Main) Air fuel ratio sensor
Heated oxygen sensor
Required Sensors/Components (Related) Intake air temperature sensor (mass air flow meter sub-assembly)
Mass air flow meter sub-assembly
Crankshaft position sensor
Engine coolant temperature sensor
Frequency of Operation Once per driving cycle
Duration Approximately 30 seconds
MIL Operation 2 driving cycles
Sequence of Operation None
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