Code P0501 Set Condition

WARNING: This page is about a different car, the 1995 Oldsmobile Ninety-Eight and 1995 Buick Park Avenue. However, it is still accessible from the selected car via links, so may be relevant.

Code P0501 will set when the following conditions are present.

Engine is running.
Code P0703 is not set.
Transmission is out of Park or Neutral for more than 4 seconds.
Vehicle speed is greater than 18 MPH.
Brake is not applied.
All conditions are met for 2 seconds.