Conditions for Running the DTC

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Cadillac Escalade EXT. However, it is still accessible from the selected car via links, so may be relevant.

P0815 or P0816

No DTC P0826.
No DTCs P1825 or P1915.
The engine speed is between 500-7,500 RPM for at least 5 seconds.
The time since the last gear selector range change is greater than 6 seconds.