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Home >> Lexus >> 2007 >> GS 350 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Control System (3UZ-FE)) >> SFI System >> 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

WARNING: This page is about a different car, the 2007 Lexus GS 430. However, it is still accessible from the selected car via links, so may be relevant.
MONITOR STRATEGY CHART

Related DTCs P0420: Catalyst (bank 1) detection
P0430: Catalyst (bank 2) detection
Required Sensors/Components (Main) Catalyst
Required Sensors/Components (Related) Heated oxygen sensor, IAT sensor, MAF meter, Crankshaft position sensor, ECT sensor
Frequency of Operation Once per drive cycle
Duration 120 seconds (20 seconds x 6)
MIL Operation 2 driving cycles
Sequence of Operation None