JDL 524047.04 – Modem, Voltage Too Low

JDL 524047.04 (JDL )

Code: 524047.04



This diagnostic trouble code, JDL 524047.04, is triggered when the voltage at the modem is found to be too low. This indicates an issue with the power supply that could affect modem performance.


When this error code is triggered, the modem may fail to operate correctly, leading to connectivity issues and communication failures.


Inspect Power Supply:

  • Check the power supply to the modem for any signs of irregularities. Ensure that the voltage levels are within the specified range.

Inspect Modem Wiring:

  • Examine the wiring to the modem for any signs of damage, such as frayed wires or loose connections. Repair or replace damaged wiring as necessary.

Check Battery Health:

  • Ensure that the battery supplying power to the modem is in good condition and fully charged. Replace the battery if it is found to be weak or defective.

Check for Voltage Drops:

  • Use a multimeter to check for voltage drops in the modem’s power circuit. Address any issues found to ensure stable voltage supply.

Consult Technical Support:

  • If the issue persists, consult the manufacturer’s technical support for further assistance.
  • Provide the diagnostic trouble code and any relevant information gathered during the inspection.


Low voltage supply can cause modem malfunctions. Regular inspection and maintenance of the modem’s power supply can help ensure reliable operation.

Control Units: John Deere

John Deere Parts
John Deere Logo