ESP_a022 — WSS Direction Fault
Full alert identifier: ESP_a022_WSSDirectionFault
Message shown in the car
ABS (anti-lock braking system) disabled Drive with caution
Alert description
Wheel Speed Sensor: General Fault.
Potential impact
Will disable VDC/TC and degrade ABS
Set condition
This error will be set if 2 rotation directions of the sensor signal are in one direction, the other 2 rotations are in the other direction OR 2 rotation directions of the sensor signal have no rotation, 1 rotation in one direction, 1 rotation in other direction
Clear condition
Check proper mounting of all four WSS. Monitor clears when all wheel speed sensors show the same rotation for 20 seconds.
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of ESP_a022.