Monitor Strategy
MONITOR STRATEGY
| Related DTCs | P0420: Catalyst Deterioration |
| Required Sensors/Components (Main) | TWC |
| Required Sensors/Components (Related) | A/F sensor, heated oxygen 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 | About 30 seconds |
| MIL Operation | 2 driving cycles |
| Sequence of Operation | None |