Monitor Strategy
WARNING: This page is about a different car, the 2025 Lexus NX 350, 2024 Lexus NX 350, 2023 Lexus NX 350, and 2022 Lexus NX 350. However, it is still accessible from the selected car via links, so may be relevant.
| Related DTCs | P0128: Coolant thermostat (jugement by simulated engine coolant temperature) P0128: Coolant thermostat (jugement by engine coolant temperature change at high vehicle speed) |
| Required Sensors/Components (Main) | Thermostat Engine coolant temperature sensor |
| Required Sensors/Components (Related) | Intake air temperature sensor (for mass air flow meter sub-assembly) Vehicle speed sensor |
| Frequency of Operation | Once per driving cycle: Judgment by simulated engine coolant temperature Continuous: Judgment by engine coolant temperature change at high vehicle speed |
| Duration | 720 seconds: Judgment by simulated engine coolant temperature -: Judgment by engine coolant temperature change at high vehicle speed |
| MIL Operation | 2 driving cycles |
| Sequence of Operation | None |