Monitor Strategy
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| 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 sub-assembly Crankshaft position sensor |
| Frequency of Operation | Continuous |
| Duration | Within 10 seconds |
| MIL Operation | 2 driving cycles |
| Sequence of Operation | None |