ESP_a021_WSSGeneralVDiffFault

Wheel Speed Sensor: General Fault.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

ABS (anti-lock braking system) disabled
Drive with caution

Impact

Will disable VDC/TC and degrade ABS

Description

Wheel Speed Sensor: General Fault.

Cause

If the difference between maximum and minimum wheel speed related to a reference speed exceeds 5%. A generic wheel speed sensor fault is set if no wheel specific fault could be determined. During system mode ABS and backup-EBD (Electr. Brake Force Distribution) and below 20 kilometers per hour the deviation is 6 kilometers per hour for velocities < 100 kilometers per hour and 6% for a velocity > 100 kilometers per hour.

Clear condition

1.) Open circuit in the WSS line 2.) Short circuit to + voltage in the WSS line 3.) Short circuit to GND in WSS line 4.) WSS dislodging from bracket 5.) Input amplifier in ECU faulty 6.) tooth wheel missing 7.) WSS not installed 8.) too great airgap 9.) incorrect tooth count

Models

Cybertruck, Model 3 2017-2023, Model 3 2024+, Model S 2021+, Model X 2021+, Model Y, Model Y 2025+

Visibility

customer, service-fix

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