Description:

This diagnostic trouble code is triggered when the control unit detects that the voltage at the signal input for the wheel speed sensor (B84) is too high, indicating a short to a supply lead or an open circuit.

Reaction:

The wheel speed sensor may provide inaccurate readings or fail to operate, affecting systems like ABS or traction control that rely on accurate speed information.

Recommendations:

• Inspect Wiring and Connections:
  • Check for any signs of damage, loose connections, or corrosion in the wiring and connections to the B84 wheel speed sensor. Repair or replace as needed.
• Test the Sensor:
  • Ensure the wheel speed sensor is functioning correctly. Replace if necessary.
• Check for Shorts and Opens:
  • Inspect the circuit for any potential shorts to a supply lead or open circuits and address the issues.
• Secure Connections:
  • Make sure all connections are secure and clean.

Note:

Regular maintenance and checks can prevent issues related to high voltage in sensor circuits. Promptly addressing any signs of wear or damage can improve system reliability.