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Error code reference

Daewoo Washer Error Code E9

Water level sensing error

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Water level sensing error – the water level sensor output is not received by the MICOM; displayed continuously with repeated beep sound and machine operation is held.

First step from the service manual

Check the water level sensor and the contact parts of the connector.

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

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What E9 means on a Daewoo washer

The E9 error code on a Daewoo washer indicates a water level sensing error, specifically that the MICOM (microcomputer control board) is not receiving any output signal from the water level sensor. The water level sensor, also called a pressure switch, is responsible for detecting the amount of water inside the drum and communicating that data to the MICOM so the machine knows when to stop filling, begin agitation, and initiate draining. When the MICOM receives no signal at all from this sensor, it immediately halts all machine operations and triggers the E9 code along with a continuous beep to alert the user.

The most direct cause of this fault is a break in communication between the water level sensor and the MICOM, which can result from a disconnected, corroded, or damaged connector at the sensor or along the wiring harness. The sensor itself may also have failed internally, producing no output. Because the error is defined specifically as the output not being received rather than an out-of-range reading, a complete open circuit condition in the sensor circuit is the primary suspect.

Diagnosis should begin by inspecting the water level sensor and all connector contact points in the sensor circuit. Check for loose pins, corrosion, or broken wires at the connector housing. If the connections are intact and secure, the sensor itself should be tested for continuity and proper function. A faulty sensor will need to be replaced to restore normal operation. The MICOM should also be considered if the sensor and wiring check out, as a failed input circuit on the control board could produce the same symptom.

Source: manufacturer service documentation.

Common causes of E9

  1. 01

    Loose or disconnected sensor connector

    Wiring / connection

    The connector linking the water level sensor to the wiring harness may have come loose or pulled free from its housing, cutting off the signal entirely. Inspect the connector at the sensor and trace the harness for any disconnected plugs.

  2. 02

    Corroded or damaged connector contacts

    Wiring / connection

    Moisture inside the machine can cause the metal pins inside the sensor connector to corrode, creating a high-resistance or open connection. Look for green or white oxidation on the pins and clean or replace the connector as needed.

  3. 03

    Failed water level sensor

    Part replacement

    The water level sensor itself may have failed internally, producing no output signal regardless of the water level in the drum. If wiring and connectors check out, the sensor should be tested and replaced if it does not respond correctly.

  4. 04

    Broken or damaged wiring harness

    Part replacement

    A wire in the harness between the sensor and the MICOM may be broken, pinched, or chafed through, interrupting the signal path. Inspect the harness routing for any visible damage or areas where wires may have contacted sharp edges.

  5. 05

    Faulty MICOM control board

    Part replacement

    If the sensor and all wiring connections test correctly, the MICOM itself may have a failed input circuit that cannot receive the sensor signal. This is the least common cause but should be considered after all other components have been ruled out.

See the test procedure for each cause

Frequently asked questions about E9

What does E9 mean on a Daewoo washer?
E9 on a Daewoo washer means the MICOM, which is the main control board, is not receiving any output signal from the water level sensor. The water level sensor monitors how much water is in the drum and sends that information to the control board. When that signal is absent, the machine cannot operate safely and shuts down while displaying E9 along with a continuous beep.
Can I fix the E9 error on my Daewoo washer myself?
Some causes of E9 are accessible to a knowledgeable DIYer. Checking and reseating the sensor connector is a straightforward first step that requires no special tools. If the connector looks fine, testing or replacing the water level sensor is also a manageable repair for someone comfortable working with appliance components. Control board replacement is generally better left to a technician.
Is it safe to use my Daewoo washer while E9 is displayed?
No, you should not attempt to run the washer while E9 is active. The machine has halted operation specifically because it cannot monitor water levels, which means it would have no way to stop filling at the correct point. Running the machine in this state risks overfilling and potential water damage.
Will resetting my Daewoo washer clear the E9 error?
A power reset may temporarily clear the display, but E9 will return as soon as the machine attempts to sense water level and finds no signal. The underlying cause, whether a loose connector, a damaged wire, or a failed sensor, must be corrected before the error will stay cleared and the washer will operate normally.
How much does it cost to repair a Daewoo washer E9 error?
Repair costs depend on the root cause. If the fix is simply reseating a loose connector, there may be no parts cost at all, though a service call fee would still apply if a technician is involved. Replacing a water level sensor typically ranges from $20 to $80 for the part, plus labor. A MICOM control board replacement is the most expensive scenario, with parts and labor potentially totaling $150 to $350 or more depending on the model and service rates in your area.

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