Conditions for Setting the DTC
WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
The HPCM observes the difference between actual and commanded ATFP pump speed is greater than 500 RPM for 4 out of 4.125 seconds.