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Error code reference

Electrolux Dishwasher Error Code LO

The control has received a signal from the rinse aid dispenser that the rinse agent level is low.

Electrolux codesElectrolux dishwasher codes

The control has received a signal from the rinse aid dispenser that the rinse agent level is low.

First step from the service manual

Fill the rinse aid dispenser.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What LO means on a Electrolux dishwasher

The LO error code on an Electrolux dishwasher indicates that the control board has received a signal from the rinse aid dispenser's level sensor indicating that the rinse agent reservoir is running low. The rinse aid dispenser is equipped with a float or optical sensor that monitors the fluid level inside the compartment. When the level drops below a set threshold, this sensor transmits a signal to the control board, which then displays the LO code to alert the user that a refill is needed.

Rinse aid plays a critical role in the drying cycle by reducing the surface tension of water, allowing it to sheet off dishes more effectively and preventing water spots and streaking. Running the dishwasher consistently without rinse aid can result in poor drying performance and residue on glassware. The LO code is a maintenance alert rather than a fault code, meaning the dishwasher will typically continue to operate, but performance may be degraded until the dispenser is refilled.

In some cases, the LO code can persist even after the dispenser has been filled, which may indicate a faulty level sensor or a dispenser assembly that is not reading the fluid level correctly. If the code remains after a confirmed refill, the dispenser assembly or its sensor may need inspection or replacement. Debris or residue buildup inside the dispenser can also interfere with the sensor's ability to detect the rinse aid level accurately.

Source: manufacturer service documentation.

Common causes of LO

  1. 01

    Depleted rinse aid supply

    Wiring / connection

    The most common cause is simply that the rinse aid compartment has been used up through normal dishwasher cycles. Filling the dispenser with rinse aid will resolve the alert in most cases.

  2. 02

    Faulty rinse aid level sensor

    Part replacement

    If the LO code persists after the dispenser has been fully refilled, the float or optical sensor inside the dispenser may be malfunctioning and sending a false low-level signal to the control board.

  3. 03

    Debris or residue blocking the sensor

    Wiring / connection

    Buildup of detergent residue or dried rinse aid inside the dispenser compartment can interfere with the sensor's ability to detect the fluid level accurately. Cleaning the dispenser thoroughly may resolve this.

  4. 04

    Damaged or cracked dispenser assembly

    Part replacement

    A cracked rinse aid dispenser can cause fluid to leak out faster than expected or prevent the sensor from reading correctly, triggering the LO alert prematurely.

See the test procedure for each cause

Frequently asked questions about LO

What does LO mean on a Electrolux dishwasher?
The LO code on an Electrolux dishwasher means the control board has detected that the rinse aid dispenser is running low on rinse agent. A sensor inside the dispenser monitors the fluid level and sends this signal to the control. The code is a maintenance reminder and not a malfunction, but drying performance may suffer until the dispenser is refilled.
How do I fix the LO code on my Electrolux dishwasher?
The first step is to open the rinse aid dispenser, located on the interior side of the door, and fill it with rinse aid until the indicator shows it is full. The LO alert should clear on its own after the dispenser is refilled and a cycle is run. If the code persists after filling, inspect the dispenser for cracks, residue buildup, or a faulty level sensor.
Is it safe to run my Electrolux dishwasher with the LO code showing?
Yes, it is generally safe to continue running the dishwasher when the LO code is displayed. The code is a maintenance alert and does not indicate a mechanical failure or safety issue. However, running the dishwasher without rinse aid will likely result in poorer drying performance and water spots on dishes and glassware.
Will resetting my Electrolux dishwasher clear the LO code?
Resetting the dishwasher alone will not permanently clear the LO code because the level sensor will continue to detect low rinse aid and signal the control board. The correct fix is to refill the rinse aid dispenser, after which the alert should clear on its own. A reset may temporarily dismiss the display, but the code will return if the rinse aid level remains low.
How much does it cost to fix a persistent LO code on an Electrolux dishwasher?
If the issue is simply an empty dispenser, the only cost is the rinse aid itself, which typically runs a few dollars per bottle. If the dispenser assembly or level sensor needs replacement, parts and labor costs can range from roughly $40 to $150 depending on the part and whether professional service is needed. Cleaning the dispenser to remove residue buildup involves no parts cost and can often be done at home.

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