PTF 000158.04 – Control Software, Supply Voltage (ELX) Too Low

PTF 000158.04 (PTF 158.04)

Code: 000158.04

Shortcode: 158.04


This error code is triggered when the supply voltage (ELX) drops below 9 V. This undervoltage condition can result in the control software malfunctioning or not functioning at all.


When this code is detected, the control software may exhibit limited or no functionality.


  • Inspect Power Supply:
    • Ensure the power supply is providing sufficient voltage.
    • Check the voltage regulator for proper operation.
  • Examine Wiring and Connections:
    • Look for damaged wires, loose connections, or signs of corrosion.
    • Repair or replace any defective components.
  • Check Battery Health:
    • Verify that the battery is in good condition and fully charged.
    • Replace the battery if it is old or unable to hold a charge.
  • Avoid Power Drains:
    • Ensure there are no devices or components that are causing an excessive drain on the power supply.


Undervoltage can severely impact the performance of the control software. Regular maintenance and monitoring of the power supply can help avoid these issues.

Control Units: John Deere

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