Monitor strategy
| Related DTCs | P0420: Catalyst monitor with sufficient sensor performance for other monitors functional check |
| Required Sensors/Components (Main) | Air/fuel ratio and oxygen sensors |
| Required Sensors/Components (Related) | Intake air temperature sensor, intake air flow meter sub-assembly, vacuum sensor, crankshaft position sensor, and E.F.I. water temperature sensor |
| Frequency of Operation | Once per driving cycle |
| Duration | 30 to 55 seconds |
| MIL Operation | 2 operation cycle |
| Sequence of Operation | None |