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Error code reference

Bosch Refrigerator Error Code 3-2-3

Ice maker

Bosch codesBosch refrigerator codes

Ice maker: Water valve of icemaker faulty.

First step from the service manual

Check water fill valve; if problematic replace; if OK replace icemaker.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What 3-2-3 means on a Bosch refrigerator

Error code 3-2-3 on a Bosch refrigerator indicates a fault detected in the water fill valve that supplies water to the ice maker. This valve is an electrically operated solenoid component that opens and closes on command from the refrigerator control board to allow water to flow into the ice maker tray during a fill cycle. When the control board detects that the valve is not operating within expected parameters, whether due to an electrical fault, a failed solenoid coil, or a wiring issue in the circuit, it registers this error code and flags the ice maker system as compromised.

The diagnostic process for 3-2-3 starts with inspecting the water fill valve itself. A faulty solenoid coil will often show an open circuit or out-of-range resistance when tested with a multimeter. Wiring harness issues such as corroded terminals, broken wires, or loose connectors at the valve or control board can also trigger this fault. If the valve tests within acceptable electrical parameters and the wiring checks out clean, the fault may originate inside the ice maker module itself, which contains its own control circuitry. In that case, replacing the ice maker assembly is the recommended resolution.

Source: manufacturer service documentation.

Common causes of 3-2-3

  1. 01

    Failed water fill valve solenoid

    Part replacement

    The solenoid coil inside the water fill valve can burn out or develop an open circuit, preventing the valve from receiving or responding to electrical signals. Testing with a multimeter will show an out-of-range or infinite resistance reading on the solenoid coil.

  2. 02

    Wiring harness damage or loose connections

    Wiring / connection

    Corroded terminals, broken wires, or disconnected connectors along the wiring path between the control board and the water valve can interrupt the signal and trigger this fault. Visually inspect and probe the harness for continuity.

  3. 03

    Faulty ice maker module

    Part replacement

    If the water valve tests electrically sound and wiring is intact, the ice maker assembly itself may have failed internal circuitry that controls or communicates valve operation. Replacing the ice maker unit is the next step in that scenario.

  4. 04

    Frozen or mechanically stuck valve

    Wiring / connection

    In some cases, mineral deposits or ice buildup can prevent the valve from opening or closing properly, causing the control board to register an abnormal response. Inspecting the valve for physical obstructions or freezing is part of a thorough evaluation.

See the test procedure for each cause

Frequently asked questions about 3-2-3

What does 3-2-3 mean on a Bosch refrigerator?
Error code 3-2-3 on a Bosch refrigerator indicates a fault with the ice maker water fill valve. The control board has detected that the solenoid valve responsible for supplying water to the ice maker is not operating correctly. This can prevent ice production entirely until the fault is resolved.
Can I fix error code 3-2-3 myself?
Diagnosing this code involves testing the water fill valve with a multimeter and inspecting the wiring harness for damage or loose connections. A knowledgeable DIYer comfortable with electrical testing can often handle this, but if the valve or ice maker module needs replacement, some mechanical disassembly is required. If you are not comfortable working with water line connections or appliance wiring, a professional technician is the safer choice.
Is it safe to keep using my refrigerator with error code 3-2-3?
The refrigerator's cooling functions for the fresh food and freezer compartments are typically not affected by this error code, so food safety is generally not an immediate concern. However, the ice maker will likely not function properly while the fault is active. It is still a good idea to address the issue promptly to avoid any related water supply problems.
How much does it cost to repair error code 3-2-3 on a Bosch refrigerator?
Repair costs depend on which component needs replacement. A water fill valve part typically runs in the range of $20 to $75, while an ice maker assembly can cost anywhere from $80 to $200 or more depending on the model. Adding professional labor, the total repair cost generally falls between $100 and $350, though this varies by region and service provider.
Will resetting my Bosch refrigerator clear error code 3-2-3?
A reset may temporarily clear the error code from the display, but it will return if the underlying fault with the water valve or ice maker has not been repaired. Resetting alone does not fix the faulty component. The correct approach is to diagnose and replace the defective part before assuming the issue is resolved.

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