I2C Send busy #26312 (MK4S) #13312 (MK4) #21312 (MK3.9) #23312 (MK3.5)

Relevant for:

MK4 MK3.9 MK3.5 MK4S

Last updated 4 months ago

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What happened?

On the Original Prusa MK4/MK3.9/MK3.5, the I2C bus is used for the xBuddy board to communicate with other printer components. The components have different states, including a busy state: if this particular state occurs while data is being sent from the xBuddy board, the printer will show the message: "HAL detected an I2C busy when sending data via I2C."

Error name: I2C Send busy

Error code: #26312 (MK4S) #13312 (MK4) #21312 (MK3.9) #23312 (MK3.5)

How to fix it?

Restarting the printer is expected to resolve the error, and this is not expected to occur again. In case a restart does not resolve it, please contact our customer support, we will take it from here.

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