Conditions for Running the DTC

WARNING: This page is about a different car, the 2004 Suzuki Swift + and 2004 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0112, P0113, P0405, P0406, and P0502 are not set.
The ignition voltage is between 11.7-16 volts.
The ambient air temperature is more than 3°C (37°F).
The desired EGR position is more than 0 percent and steady within 3 percent.
DTC P0404 runs continuously every 125 milliseconds when the above conditions are met.