Possible Causes
WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
- Wheel speed sensor input concern
- Wheel speed sensor
- AL1: CHECK FOR OTHER ABS MODULE DTCS
- Review the recorded results from the ABS module self-test.
- Are any wheel speed sensor DTCs present which are NOT shown in the DTC Fault Trigger Conditions table?
Yes No DIAGNOSE those DTCs first. REFER to the ABS - ANTILOCK BRAKING SYSTEM DTC INDEX . INSTALL a new wheel speed sensor for the one in question. REFER to the appropriate Removal and Installation procedure in REMOVAL AND INSTALLATION