Monitor Strategy

Related DTCs

P0420: Catalyst Deterioration

Required Sensors/Components (Main)

TWC

Required Sensors/Components (Related)

A/F sensor, HO2 sensor, intake air temperature sensor, mass air flow meter, crankshaft position sensor and engine coolant temperature sensor

Frequency of Operation

Once per driving cycle

Duration

20 seconds

MIL Operation

2 driving cycles

Sequence of Operation

None

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