BIF 002156.09 – HF Power Module PC6 Communication Error. John Deere System Advisory.

BIF 002156.09 (BIF 2156.09)

Code: 002156.09

Shortcode: 2156.09


Error code BIF 002156.09 is set when there is a disruption in data transmission between the High Frequency (HF) Power Module PC6 and the BIF control unit. This diagnostic trouble code arises due to intermittent or nonexistent reception of one or more CAN messages from the HF power module, which may be caused by issues like loose wiring.


The control unit may enact protective measures or reduce the functionality of systems dependent on the HF power module to prevent operational hazards or further system damage.


  • Inspect and Repair Wiring: Examine all related wiring and connections for the HF Power Module PC6. Tighten any loose connections and replace damaged wires to restore stable communication.
  • Check CAN BUS Network: Use diagnostic tools to evaluate the CAN BUS network, focusing on the communication paths involving the HF Power Module PC6. Identify and address disruptions or signal integrity issues.
  • Update System Software: Ensure that both the firmware of the power module and the software of the BIF are up-to-date. Software updates can often resolve compatibility issues and improve data handling.
  • Evaluate Module Functionality: Test the functionality of the HF Power Module PC6 to confirm it is accurately processing and transmitting data. Repair or replace the module if it fails to operate correctly.
  • Comprehensive Diagnostic Evaluation: Perform thorough diagnostics on the entire communication system to uncover any less obvious issues that might be contributing to the data transfer problems.


Regular maintenance and precise monitoring of the communication between the HF power module and the control unit are essential to ensuring the reliable operation of associated systems. Promptly addressing communication faults can prevent more significant issues and help maintain the efficiency and safety of the machinery.

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