Electrolux Dishwasher Error Code Er 02

Er 02 indicates that the dishwasher's thermistor or turbidity module has failed or is sending a signal the control board cannot interpret. The thermistor monitors water temperature and the turbidity sensor measures water cleanliness during the wash cycle. When this sensor assembly malfunctions, the dishwasher stops operating and displays Er 02 to alert you to the fault.

You should not continue running the dishwasher while Er 02 is active. Because the thermistor monitors water temperature, a failed sensor means the control board cannot properly regulate the heating element during the wash cycle. Running the appliance without reliable temperature control could result in overheating or inadequate cleaning, and the dishwasher will typically refuse to complete a cycle anyway until the fault is resolved.

A reset may temporarily clear the displayed code, but if the thermistor or turbidity module has genuinely failed, the error will return as soon as the dishwasher attempts to read the sensor again. Resetting can be a useful first step to confirm whether the fault is intermittent or persistent, but it does not address the underlying hardware problem. A proper repair of the sensor or wiring is needed for a permanent fix.

Some causes of Er 02 are DIY-accessible, such as reseating a loose wiring connector or cleaning debris from the sensor. If the sensor module itself has failed, replacing it requires basic disassembly of the dishwasher interior and comfort working with appliance wiring. Technicians with appliance repair experience can typically handle this repair, but if you are unsure about working with electrical components, hiring a professional is the safer choice.

If only the thermistor or turbidity module needs replacement, parts typically range from around $20 to $80 depending on the specific model. If professional labor is included, total repair costs generally fall in the $100 to $250 range. A failed control board, if that turns out to be the root cause, would increase costs significantly.