ECU 005128.05 – Sensor Supply Voltage 10, Resistance Too High. John Deere System Advisory.

ECU 005128.05 (ECU 5128.05)

Code: 005128.05

Shortcode: 5128.05


This diagnostic trouble code indicates that the resistance in the supply voltage circuit for Sensor 10 is too high, typically indicating an open circuit. This condition can affect the proper functioning of the sensor and its associated systems.


The ECU may limit or adjust the operation of the systems associated with Sensor 10 to manage the high circuit resistance and ensure safe operation.


  • Inspect Wiring and Connections: Check for damaged, frayed, or loose wiring and connectors associated with Sensor 10. Repair or replace as necessary.
  • Test Sensor Element: Use diagnostic tools to test Sensor 10 for proper resistance and continuity. Replace the sensor if it is faulty.
  • Check for Open Circuits: Inspect the circuit for any breaks or discontinuities that could cause high resistance. Repair or replace as needed.
  • Verify Electrical Supply: Ensure that the electrical supply to the sensor is stable and within specifications.
  • Reset ECU and Monitor System: After resolving the issue, reset the ECU to clear the fault code and monitor the system to ensure normal operation.


Proper electrical function and resistance in sensor circuits are crucial for accurate data collection and system performance. Regular inspections and timely maintenance can help prevent resistance-related issues.

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