Conditions For Running DTC

WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.

No VSS DTC P0502.
Engine speed is more than 500 RPM for 5 seconds and not in fuel shut-off mode.
No output shaft speed rise greater than 250 RPM in 2 seconds.