ICC 002808.03 – Keypad Voltage Above Normal, or Shorted to High Source

ICC 002808.03 (ICC 2808.03)

Code: 002808.03

Shortcode: 2808.03


This code indicates that the voltage for the keypad is above normal, suggesting that the display mode switch is stuck on or the switch used to navigate user menus is defective. This could be due to a short circuit, a faulty switch, or issues within the control module.


The keypad may not function correctly, affecting the ability to navigate user menus and control various functions. The operator might see a warning light or message on the dashboard.


  • Inspect Keypad and Switches:
    • Check the keypad and associated switches for proper operation. Replace any defective switches.
  • Examine Wiring and Connectors:
    • Inspect the wiring harness and connectors for signs of damage, corrosion, or loose connections.
    • Repair or replace any damaged components.
  • Test Control Module:
    • Verify the functionality of the control module responsible for the keypad.
    • Replace the control module if necessary.
  • Check for Voltage Issues:
    • Use a multimeter to check for voltage levels in the keypad circuit.
    • Repair any issues with high voltage or short circuits.


Regular maintenance and inspection of the control systems and keypad can help prevent issues and ensure proper operation.

Control Units: John Deere

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