Canon MX439 Ink Absorber Full Reset

When Canon MX439 triggers an ink absorber full condition, the printer may block printing as a protective measure. The solution is typically a waste ink counter reset.

During head cleaning, surplus ink is routed to internal absorber pads. Canon MX439 monitors this via a counter and can lock printing at a threshold.

This page is prepared for Canon MX439. Service mode instructions are shown only when a matching series procedure is known.

How the Error Appears

• Service / maintenance warning on the screen or driver
• Printer refuses to print even with ink available
• Blinking lights and queued jobs fail
• Error reappears after restart

Perform the Waste Ink Counter Reset

Completing the reset clears the internal ink absorber counter stored in printer memory and restores normal operation.

Before You Continue

If absorber pads are truly saturated, ignoring maintenance can lead to ink leakage inside the printer. The counter reset only removes the software lock.

Need a reset solution?

Use a reliable USB connection and follow the steps in order.

Common Fixes

• Try a different USB cable/port if using PC software.
• Repeat the service mode steps carefully (timing matters).
• Close other Canon printer utilities while resetting.
• Use the correct Stop/Reset press count for your series.
• Power-cycle the printer and try again.

FAQ