OIC 520965.04 – CAN BUS Terminating Resistor, CAN BUS Voltage Too Low

OIC 520965.04 (OIC )

Code: 520965.04

Shortcode:

Description:

This error code is generated if the control software detects that the voltage on the CAN BUS is too low, indicating a short circuit to ground.

Reaction:

The control software may function in a limited capacity or not at all, affecting CAN Bus communication and overall vehicle operation.

Recommendations:

Inspect CAN Bus Connections:

  • Check the wiring and connections of the CAN Bus for signs of damage, loose connections, or corrosion. Repair or replace any faulty components.

Test Voltage Levels:

  • Use a multimeter to measure the voltage on the CAN Bus. Ensure it remains within the specified range. If it is too low, investigate the power source for faults.

Check for Shorts:

  • Inspect for any short circuits to ground along the CAN Bus wiring. Repair any identified shorts.

Verify Terminating Resistor:

  • Ensure that the terminating resistor is correctly installed and functioning properly. Replace if necessary.

Update Control Software:

  • Ensure that the control software is updated to the latest version. Firmware updates might improve handling of CAN Bus voltage levels.

Consult Manufacturer Support:

  • If the issue persists, consult technical support or the manufacturer for further diagnostics and assistance.

Monitor System Performance:

  • After addressing the issue, monitor the system to ensure the CAN Bus voltage remains within the specified range and the error does not recur.

Note:

Maintaining proper voltage levels in the CAN Bus is crucial for reliable communication. Regular checks and maintenance can prevent voltage-related issues.


Control Units: John Deere

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