Conditions For Running DTC

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

No VSS DTC P0502.
No TFP manual valve position switch DTC P1810.
The engine speed is more than 500 RPM for 5 seconds and not in fuel shut off.
The transmission is not in PARK or NEUTRAL.
The time since the last gear range change is greater than 6 seconds.
No output shaft speed rise greater than 250 RPM in 2 seconds.