BRC 523837.03 – High Voltage in Rear Brake Pressure Sensor Circuit. John Deere System Advisory.

BRC 523837.03 (BRC )

Code: 523837.03



Error code BRC 523837.03 is triggered when the voltage at the rear brake pressure sensor exceeds 4.50 volts while the right brake pedal is released. This high voltage reading could indicate an electrical issue such as a short circuit, a fault in the sensor itself, or improper calibration of the sensor circuit.


Due to this abnormal voltage detection, the control unit has disabled the function of the rear brake system to prevent any unsafe braking behavior, reducing the risk of unintended braking or other hazardous conditions.


  • Inspect Sensor and Wiring: Examine the rear brake pressure sensor and associated wiring for signs of damage, corrosion, or loose connections that could be causing the high voltage readings.
  • Test Sensor and Circuit: Use a multimeter to test the voltage levels at the sensor under different conditions to determine if the high voltage is persistent or a result of a transient fault.
  • Replace Faulty Sensor: If the sensor is found to be faulty or damaged, replace it to ensure accurate and reliable brake pressure readings.
  • Check Electrical System: Review the vehicle’s overall electrical system, particularly the circuits connected to the brake pressure sensor, for any issues that might cause over-voltage.
  • Reset and Recalibrate: After addressing any hardware issues, reset the sensor settings and recalibrate the system to the manufacturer’s specifications. Ensure all system tests confirm normal operation before returning the vehicle to service.


Maintaining accurate sensor readings is essential for the safe operation of the braking system. Regular inspections and timely intervention to correct high voltage issues in sensor circuits help ensure vehicle safety and prevent mechanical failures that could lead to accidents or system damage.