Electrolux Dishwasher Error Code iB3

The iB3 code means the turbidity sensor produced an out-of-range value during its calibration sequence, and the reading was invalid. The turbidity sensor monitors water dirtiness to adjust the wash cycle automatically. When this calibration fails, the dishwasher defaults to running the cycle at the highest soil level setting. Note that the letter 'B' in the code may appear as 'H' on some display types.

The dishwasher is designed to continue operating after an iB3 error, with the soil level fixed at high for the remainder of the cycle. This means it is generally safe to use in the short term, but water and energy efficiency will be reduced since the machine can no longer adjust automatically to actual soil levels. It is best to address the fault as soon as practical to restore normal sensor-controlled operation.

Resetting the dishwasher may temporarily clear the iB3 code from the display, but if the turbidity sensor is faulty or contaminated, the error will return when the next cycle runs its calibration sequence. A reset alone does not fix the underlying sensor fault. The code will continue to reappear until the sensor is inspected, cleaned, or replaced.

If you are comfortable with basic appliance repair, replacing the turbidity sensor is the recommended first step and is within reach for many DIYers. Before replacing the sensor, check whether it is visibly fouled with grease or scale deposits, which can sometimes be cleaned. Also inspect the wiring connector for corrosion or loose pins. If sensor replacement does not resolve the code, further diagnosis of the control board may require a technician.

If only the turbidity sensor needs replacement, parts typically range from around $15 to $60 depending on the specific model, and the repair is relatively straightforward. If a service technician is needed, expect labor costs to add $80 to $150 or more. In the unlikely event the main control board is also involved, total repair costs could be considerably higher, often in the $200 to $400 range including parts and labor.