Monitor Strategy
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
P0400
| Related DTC | P0400: EGR valve flow functional |
| Required Sensors/Components (Main) | EGR valve assembly Manifold absolute pressure sensor |
| Required Sensors/Components (Related) | Crankshaft position sensor Camshaft position sensor Vehicle speed sensor Engine coolant temperature sensor Mass air flow meter sub-assembly |
| Frequency of Operation | Once per driving cycle |
| Duration | Within 5 seconds |
| MIL operation | 2 driving cycles |
| Sequence of operation | None |
P0401, P0402
| Related DTC | P0401: EGR valve low flow rate P0402: EGR valve high flow rate |
| Required Sensors/Components (Main) | EGR valve assembly Manifold absolute pressure sensor |
| Required Sensors/Components (Related) | Crankshaft position sensor Camshaft position sensor Vehicle speed sensor Engine coolant temperature sensor Mass air flow meter sub-assembly |
| Frequency of Operation | Once per driving cycle |
| Duration | Within 5 seconds |
| MIL operation | 2 driving cycles |
| Sequence of operation | Stored when DTC P0400-00 is stored in the second trip |