Typical Malfunction Thresholds
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
| Manifold pressure change* | Less than 1.72 kPa (0.25 psi) (at engine speed 1200 rpm) |
P0401
| Manifold pressure change* | Less than 1.72 kPa (0.25 psi) (at engine speed 1200 rpm) |
| Manifold pressure | Less than 41.5 kPa (6.02 psi) |
P0402
| Manifold pressure change* | Less than 1.72 kPa (0.25 psi) (at engine speed 1200 rpm) |
| Manifold pressure | 41.5 kPa (6.02 psi) or more |
| *: Calculated by EGR valve open and close | - |