Typical Malfunction Thresholds
WARNING: This page is about a different car, the 2025 Lexus NX 250, 2024 Lexus NX 250, 2023 Lexus NX 250, and 2022 Lexus NX 250. However, it is still accessible from the selected car via links, so may be relevant.
P0400 (EXCEPT MEXICO MODELS)
| Manifold pressure change* | Less than 3.05 kPa [0.44 psi] (at engine speed 1400 rpm) |
P0401 (EXCEPT MEXICO MODELS)
| Manifold pressure change* | Less than 3.05 kPa [0.44 psi] (at engine speed 1400 rpm) |
| Manifold pressure | Less than 31.41 kPa [4.55 psi] |
P0402 (EXCEPT MEXICO MODELS)
| Manifold pressure change* | Less than 3.05 kPa [0.44 psi] (at engine speed 1400 rpm) |
| Manifold pressure | 31.41 kPa [4.55 psi] or more |
| *: Calculated by EGR valve open and close | - |
P0401 (FOR MEXICO MODELS)
| Manifold pressure change | Less than 2.03 kPa [2.94 psi] |
| At engine speed | 1400 rpm |