Conditions for Setting the DTC

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

The ECM does not detect a change in fuel level in the primary fuel tank of at least 1.0L (0.246 gal).
The difference between fuel consumed by the engine and a change in fuel level signal exceeds 46%.
The above condition is present for at least 300 seconds.