Monitor Strategy
MONITOR STRATEGY SPECIFICATION TABLE
| Related DTCs | P0420: Bank 1 catalyst deteriorated |
| Required sensors/ components (Main) | Front and rear heated oxygen sensor |
| Required sensors/ components (Related) | Mass air flow meter, engine coolant temperature sensor, engine speed sensor, intake air temperature sensor |
| Frequency of operation | Once per driving cycle |
| Duration | 90 seconds (30 seconds x3) |
| MIL operation | 2 driving cycles |
| Sequence of operation | None |