PLC 328012.31 – B84 Wheel Speed Sensor, Voltage Too High

PLC 328012.31 (PLC )

Code: 328012.31

Shortcode:

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.


Control Units: John Deere

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