BCU 002354.01 – Front Corner Worklights Power Supply Fault. John Deere System Advisory.

BCU 002354.01 (BCU 2354.01)

Code: 002354.01

Shortcode: 2354.01


Error code BCU 002354.01 is activated when the Power Module (High Frequency) PC6 in a John Deere vehicle detects a supply voltage of less than 3 volts at the output for the front corner worklights (lead 0222) when these lights are switched on. This low voltage reading suggests a potential power supply issue, which could be due to problems such as poor wiring connections, degraded wires, or faults within the power module itself, affecting the proper functioning of the front corner worklights.


The detection of this low voltage will likely cause the system to disable the front corner worklights to prevent operation under inadequate power conditions, which could lead to improper lighting performance or damage to the electrical components.


  • Inspect Wiring and Connections: Examine the wiring and connections from the power module PC6 to the front corner worklights. Look for any signs of damage, wear, or corrosion that might be causing the low voltage issue.
  • Test Power Module Output: Measure the voltage output at lead 0222 using a multimeter while the front corner worklights are activated. This test will help confirm the low voltage condition and aid in pinpointing the cause.
  • Check Ground Connections: Ensure that all ground connections related to the front corner worklights and power module PC6 are secure and free from corrosion. A poor ground can result in low voltage readings.
  • Replace or Repair Faulty Components: If any components of the wiring or power module are found to be defective, repair or replace them to ensure reliable power delivery to the worklights.
  • Reset the Power Module and Clear Diagnostic Codes: After making the necessary repairs, reset the power module PC6 to clear the diagnostic trouble codes and restore the worklights’ operation. This step ensures that the system recognizes the repairs and operates correctly.
  • Monitor System Operation: After repairs are completed, continue to monitor the voltage at the front corner worklights and the overall performance of the lighting system to ensure that no further issues occur.


Maintaining the electrical integrity of vehicle lighting systems is crucial for safe operation, especially in low visibility conditions. Regular checks and prompt repairs of the power supply and wiring ensure that worklights function efficiently and reliably, enhancing both the safety and productivity of John Deere equipment. Addressing power supply faults quickly helps avoid potential safety risks and operational inefficiencies.