Monitor Strategy
| Related DTCs | P0171: Fuel trim lean P0172: Fuel trim rich |
| Required Sensors/Components (Main) | Fuel system |
| Required Sensors/Components (Related) | Air fuel ratio sensor Mass air flow meter Crankshaft position sensor |
| Frequency of Operation | Continuous |
| Duration | Within 10 seconds |
| MIL Operation | 2 driving cycles |
| Sequence of Operation | None |