DTC P1501: Vehicle Speed Sensor Out of Self Test Range: Action
WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2018 Lincoln MKZ, 2018 Ford Transit-350 HD, 2018 Ford Transit-350, 2018 Ford Transit-250, and 2018 Ford Transit-150. However, it is still accessible from the selected car via links, so may be relevant.
This DTC sets if the information in the wheel speed sensor message is outside of the programmed set of parameters. This is most likely due to wheel speed sensor concerns, wiring harness concerns or vehicle communication concerns. RETRIEVE and DIAGNOSE all ABS module DTCs. Go to the ABS Module DTC Chart