Conditions For Running DTC
DTCs P0421 and P0431 are not set.
- Engine load is 20 and 45 percent.
- Manifold Absolute Pressure (MAP) sensor variation is less than 6 kPa.
- Catalytic temperature is greater than 662°F (350°C).
- Engine is in closed-loop fuel control.
- Engine speed is 1000-2120 RPM.