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Home › Buick › 2021 › Envision Preferred, AWD › Repair and Diagnosis › Brakes › Traction Control › Antilock Brake System › Diagnostic Information and Procedures › DTC P15FD › Circuit/System Verification

Circuit/System Verification

  1. Ignition - On/Vehicle - In Service Mode
  2. Test drive the vehicle.
  3. All sensors must show the same speed when driving in a straight line at a speed greater than 40 km/h (25 MPH).
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