Typical Malfunction Thresholds
WARNING: This page is about a different car, the 2024 Lexus ES 250, 2023 Lexus ES 250, 2022 Lexus ES 250, and 2021 Lexus ES 250. However, it is still accessible from the selected car via links, so may be relevant.
P0400
| Manifold pressure change* | Less than 3.05 kPa [0.44 psi] (at engine speed 1400 rpm) |
P0401
| Manifold pressure change* | Less than 3.05 kPa [0.44 psi] (at engine speed 1400 rpm) |
| Manifold pressure | Less than 31.99 kPa [4.64 psi] |
P0402
| Manifold pressure change* | Less than 3.05 kPa [0.44 psi] (at engine speed 1400 rpm) |
| Manifold pressure | 31.99 kPa [4.64 psi] or more |
| *: Calculated by EGR valve open and close | - |