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Home >> Toyota >> 2018 >> Highlander LE Plus, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (SFI System [2GR-FE] - Diagnostic Codes - (Except Hybrid) (2 Of 5)) >> SFI System >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430: Catalyst System Efficiency Below Threshold (Bank 2) [12/2013 - 08/2014] >> Monitor Strategy

Monitor Strategy

WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
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
Crankshaft position sensor
Engine coolant temperature sensor
Frequency of Operation Once per driving cycle
Duration Approximately 30 seconds
MIL Operation 2 driving cycles: for Mexico models
Immediate: except for Mexico models
Sequence of Operation None
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