0x000043L4160

Epson EcoTank L4160 Error 0x000043 | Printhead Thermal Error

Error code 0x000043 on the Epson EcoTank L4160 is a safety lock representing printhead overheating. The control board logs excessive temperatures on the piezo nozzles, halting operation to prevent permanent thermal burnout.

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Common causes

  • 1Printing with empty or critically low ink reservoirs.
  • 2Large air locks inside the ink tubes preventing fluid flow to the printhead.
  • 3Internal electronics failure or short-circuit caused by liquid ink pooling on the ribbon carriage pins.

Solutions

How to Fix Printhead Overheat Error 0x000043

This safety state triggers to stop the nozzles from running dry and suffering irreversible physical damage due to lack of liquid ink cooling.

Solution: Cooldown Cycle and Tube Air Clearance

  1. Disconnect Power Immediately: Turn off the L4160 via the button and disconnect the power cord.
  2. Allow Cooldown Period: Leave the unit disconnected for 30 to 45 minutes. This is critical to let the thermal resistors inside the piezo head return to base temperature levels.
  3. Inspect Ink Reservoirs: Visually verify that all four ink tanks have liquid levels above the lower limit line. Printing dry blocks heat dissipation and will quickly re-trigger this thermal warning.

Steps to follow

  1. 1

    Power off and disconnect

    Shut off the G-series unit immediately and unplug the power cable to stop current flow.

  2. 2

    Verify physical ink levels

    Confirm all four ink colors are filled above the minimal indicator lines.

  3. 3

    Wait for cooldown

    Allow the printer to sit idle for at least 45 minutes to let the internal printhead resistors cool down.

Frequently asked questions

Yes. Liquid ink acts as a crucial coolant for the piezo print nozzles. Running the head dry causes heat to build up rapidly, causing an automatic protective shutdown.

Epson EcoTank L4160 Error 0x000043 | Printhead Thermal Error | Vimazdev