When Monitored and Set Condition:
WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
When Monitored: Ignition on.
Set Condition: When rotational wheel speed differing from the average wheel speed for the vehicle by more than 13%. Average wheel speeds less than 40 MPH and greater than 10 MPH (no more than 1/2 MPH difference in the front wheel speeds). Average wheel speeds less than 40 MPH and greater than 25 MPH (front wheel speed variance greater than 1/2 MPH). No wheel slippage detected, not in antilock mode, system not disabled, and no open sensor code.