Typical Malfunction Thresholds
P0400
| Manifold pressure change* | Less than 1.75 kPa (0.25 psi) (at engine speed 1000 rpm) |
P0401
| Manifold pressure change* | Less than 1.75 kPa (0.25 psi) (at engine speed 1000 rpm) |
| Manifold pressure | Less than 57.05 kPa (8.27 psi) |
P0402
| Manifold pressure change* | Less than 1.75 kPa (0.25 psi) (at engine speed 1000 rpm) |
| Manifold pressure | 57.05 kPa (8.27 psi) or more |
| *: Calculated by EGR valve open and close | - |