CAB 001079.03 – High CAB Sensor Supply Voltage

CAB 001079.03 (CAB )

Code: 001079.03



The error code CAB 001079.03 is activated when the CAB control unit detects a higher than normal voltage in the sensor supply circuit. This overvoltage condition can potentially damage sensitive sensor components or lead to incorrect sensor readings, which may affect the overall performance and safety of the control system.


To mitigate the risk of damage and maintain system integrity, the control unit restricts certain functions until the voltage issue is resolved.


  • Inspect Wiring and Connectors: Begin by examining all wiring and connectors that are part of the sensor supply circuit. Look for signs of wear, corrosion, or loose connections that might contribute to voltage irregularities.
  • Measure and Monitor Voltage Levels: Use a multimeter to measure the supply voltage levels to the sensors. Compare these readings with the manufacturer’s specifications to identify any deviations.
  • Check Voltage Regulators: Investigate voltage regulators and other power management components for faults. These components are crucial for maintaining stable voltage supply and may need replacement if they are found to be defective.
  • Replace Damaged Sensors: If high voltage has potentially damaged any sensors, consider replacing them to ensure accurate performance and prevent further system issues.
  • Reset and Recalibrate the System: After any corrective actions, reset the control unit to clear the error code and recalibrate the system to ensure all sensors are functioning correctly under the adjusted voltage conditions.


Maintaining proper voltage levels is crucial for the longevity and reliability of sensor equipment. Regular checks and preventive maintenance should be performed to ensure that all components within the sensor supply circuit are functioning correctly, thereby preventing overvoltage and preserving the health of the system.

Control Units: John Deere

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