Conditions for Running the DTC

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0111, P0112, P0113, P0114, P0117, P0118, P0128, P0502, P0503, P0601, P1621 or P2610 are not set.
The vehicle has had a minimum ignition OFF time of 8 hours.
The Ignition is ON.
The start-up IAT is warmer than -7°C (+19°F).
Fuel level is greater than 2.5%
This DTC runs once per ignition cycle when the above conditions are met.