Dishwasher displays error code iC0 - Causes and Fixes

Issue

If your dishwasher displays error code iC0, iC1, iC2, or iC3, if the dishwasher will not start a programme, or if the dishwasher stops working unexpectedly, the issue is often related to an electronic control or communication fault within the dishwasher system. These error codes can sometimes be triggered by temporary software issues, excessive foam, or debris in the filter and sump area.

Typical signs:

  • Dishwasher shows iC0, iC1, iC2, or iC3 on the display
  • Dishwasher does not start a wash cycle
  • Programme stops unexpectedly
  • Controls are unresponsive
  • Error code reappears after restarting the dishwasher

Applies to:

  • integrated dishwasher
  • freestanding dishwasher

Resolution

Start by checking the most common causes of the problem. In many cases, the issue can be resolved without service.

  1. Disconnect power to the dishwasher at the wall socket or circuit breaker.
  2. Check the dishwasher filter and sump area for debris, food residues, or excessive foam.
  3. Clean all filters thoroughly.
  4. Remove any foam or debris from the sump area.
  5. Restore power to the dishwasher.
  6. Select a suitable programme and start a wash cycle.
  7. Check whether the dishwasher operates normally.

How To Clean Dishwasher Filters

If the dishwasher displays a different error code after resetting, consult the user manual or our Support Pages for the meaning of the new code.

Download User Manual

Dishwasher Support

Important

Do not continue using the dishwasher if the error code returns repeatedly. Repeated iC0, iC1, iC2, or iC3 errors may indicate a fault in the electronic control system that requires professional diagnosis.

When Is It A Genuine Fault?

In these situations, there may be a fault with the dishwasher's electronic control system, wiring, or communication circuits:

  • The error returns immediately after a reset
  • The dishwasher will not start any programme
  • The controls remain unresponsive
  • Multiple electronic error codes appear
  • The dishwasher stops during every wash cycle

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If your dishwasher continues to experience problems, our specially trained technicians can quickly identify the cause and perform the required repair.

Cause:

The iC0 error family indicates a technical malfunction within the dishwasher's control system. The control electronics continuously exchange information between sensors, user controls, and the main electronic module. If this communication is interrupted or the system detects an abnormal operating condition, the dishwasher may display iC0, iC1, iC2, or iC3.

The most common causes are:

  • Temporary electronic control fault
  • Software communication error
  • Excessive foam inside the dishwasher
  • Debris in the filter or sump area
  • Wiring or control module malfunction

Resetting the dishwasher removes power from the control electronics and allows the system to restart. Cleaning the filter and sump helps eliminate conditions that may interfere with normal operation.

FAQ – Dishwasher iC0, iC1, iC2 or iC3 Error Codes

What does iC0 means on a dishwasher?

It indicates a technical or electronic control system malfunction.

Can I reset the dishwasher to clear the error?

Yes. Disconnect power for about 1 minute, then reconnect and test the dishwasher.

Can a dirty filter cause the error code?

In some cases, debris or excessive foam in the filter or sump area may contribute to the error.

Why does the error return after resetting?

A recurring error may indicate an underlying fault in the control system, wiring, or electronics.

Is this error always caused by a faulty control board?

No. Temporary electronic faults, foam, or debris may also trigger the code.

When should I book a service visit?

If the error persists after resetting and cleaning the filters, professional diagnosis is recommended.

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Dishwasher displays error code iC0 - Causes and Fixes | Zanussi