Conditions for Running the DTC

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0401, P0403, P0405, P0406, P0489, or P0490 are not set
The battery voltage is greater than 11 V.
The engine is running
The DTCs run continuously when the above conditions are met.