Dishwasher displays AL04, often associated with temperature sensing or heating issues.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Open or shorted NTC sensor, Loose NTC connector, Damaged wiring to NTC, Water ingress into sensor housing

AL04 is typically resolved by the same steps as F03:

Access the sump area and locate the NTC sensor.
Inspect and clean the connector, check wiring for damage.
Measure NTC resistance at room temperature; replace if out of specification or open.
Refit with correct sealing and test a hot cycle.

Disconnect mains power before any work.

Medium 3/5

NTC Temperature Sensor

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