Conditions For Running DTC

WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.

No TFP manual valve position switch DTC P1810.
The engine speed is greater than 450 RPM for 5 seconds.
The 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 250 RPM within 2 seconds.