Monitor Strategy
| Related DTCs | P219A: Air fuel ratio cylinder imbalance monitor (bank 1) P219B: Air fuel ratio cylinder imbalance monitor (bank 2) 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) P21A0: Air fuel ratio cylinder imbalance monitor (cylinder 5) P21A1: Air fuel ratio cylinder imbalance monitor (cylinder 6) |
| 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: P219A and P219B 30 seconds: Others |
| MIL Operation | 2 driving cycles |
| Sequence of Operation | None |