Conditions For Running DTC P0503

WARNING: This page is about a different car, the 2002 Buick Regal, 2002 Buick Century, 2001 Buick Regal, and 2001 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

DTC will run under the following conditions:

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