Audi A4 B5 - ABS Light On: Troubleshooting Wheel Speed Sensor & Other Possible Causes

The discussion revolves around troubleshooting the ABS light issue on an Audi A4 B5 after replacing the front wheel speed sensor. The user initially resolved the ABS indicator by installing a new sensor, but the light reactivated after braking. Responses suggest checking the ABS gear ring for corrosion or debris, as well as ensuring the sensor is free from residues. One user shared a similar experience, emphasizing the importance of checking wire continuity and cleaning the sensor area. Ultimately, the original poster found that driving a longer distance resolved the issue, indicating a potential need for the system to recalibrate.
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