Monitor Strategy
| Related DTCs | P219A: Air fuel ratio cylinder imbalance monitor (Bank 1) P219C: Air fuel ratio cylinder imbalance monitor (Cylinder 1) P219D: Air fuel ratio cylinder imbalance monitor (Cylinder 2) P219E: Air fuel ratio cylinder imbalance monitor (Cylinder 3) P219F: Air fuel ratio cylinder imbalance monitor (Cylinder 4) |
| Required Sensors/Components (Main) | Air fuel ratio sensor Crankshaft position sensor |
| Required Sensors/Components (Related) | Mass air flow meter sub-assembly Engine coolant temperature sensor Vehicle speed sensor |
| Frequency of Operation | Once per driving cycle |
| Duration | 10 seconds: Air fuel ratio sensor monitoring method 30 seconds: Crankshaft position sensor monitoring method |
| MIL Operation | 2 driving cycles |
| Sequence of Operation | None |