USB Port overcurrent #26306 (MK4S) #13306 (MK4) #21306 (MK3.9) #23306 (MK3.5)

Relevant for:

MK4 MK3.9 MK3.5 MK4S

Last updated 3 months ago

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What happened?

The printer is showing the message "Overcurrent detected on USB port."

Error name: Advanced Power Overcurrent USB Host

Error code: #26306 (MK4S) #13306 (MK4) #21306 (MK3.9) #23306 (MK3.5)

The error is shown when there is a damaged cable on the LCD or any of its connections.

How to fix it?

The most likely cause of this issue is damage to the LCD cable. Check the path between the LCD and the xBuddy board, and see if there are any parts that are broken or pinched.

In case there is no damage, check the cable connection to the LCD board and to the xBuddy board. Try reconnecting the connectors.

In rare cases, this error message can be shown in case of damage to the xBuddy board. So if the cables and connectors are intact, try checking the board for any damage.

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