In a machine having a differential steering control system, uncommanded motion may be determined by comparing an actual speed of a steering motor to a commanded turn direction signal from an operator. Where uncommanded motion is occurring, the steering motor speed and time-rate-of-change of the steering motor speed may be used to determine a weighted steering motor speed that is accumulated over a series of sample cycles and compared to an integration limit to determine whether the operator should be warned of the occurrence of uncommanded motion. The integration limit may be based on a factor indicative of the responsiveness of the machine, such as the oil temperature.