LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2011 >> RX 450h 3.5 B >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0300-P1423) >> SFI System >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430: Catalyst System Efficiency Below Threshold (Bank 2) >> Monitor Strategy
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Monitor Strategy

Related DTCs P0420: Catalyst deterioration (bank 1)
P0430: Catalyst deterioration (bank 2)
Required Sensors / Components (Main) Air fuel ratio sensor and heated oxygen sensor
Required Sensors / Components (Related) Intake air temperature sensor, mass air flow meter sub-assembly, 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
scientia non olet · About LEMON Manuals