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Home >> Toyota >> 2007 >> Highlander Base, 3.3 P, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Engine Control System) >> SFI System >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1) >> Monitor Strategy
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Monitor Strategy

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

Related DTCs P0420: Bank 1 catalyst is deteriorated
Required sensors/components Main:
A/F sensor, heated oxygen sensor
Related:
Mass airflow meter, engine coolant temperature sensor, engine speed sensor, intake air temperature sensor
Frequency of operation Once per driving cycle
Duration 30 seconds
MIL operation 2 driving cycles
Sequence of operation None
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