Conditions For Running DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Sonoma, 2003 GMC Safari, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

No TFP manual valve position switch DTC P1810.
Engine speed is greater than 450 RPM.
Engine is not in fuel cutoff.
The time since the last gear range change is greater than 6 seconds.
The transmission output speed rise does not exceed 600 RPM within 2 seconds.