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Error code reference

Bosch Refrigerator Error Code 3-1-3

Ice maker

Bosch codesBosch refrigerator codes

Ice maker: Water valve of ice maker faulty.

First step from the service manual

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

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

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What 3-1-3 means on a Bosch refrigerator

Error code 3-1-3 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 valve that opens on command from the control board to allow water to flow into the ice maker tray. When the control system detects that the valve is not responding correctly, whether due to an electrical failure, a mechanical obstruction, or an out-of-range resistance reading, it logs this code and may suspend ice production to prevent flooding or other damage.

The water fill valve operates by receiving a voltage signal from the main control board. If the solenoid coil inside the valve has failed, shorted, or gone open-circuit, the board cannot confirm proper valve operation and triggers the 3-1-3 fault. A valve that is stuck open can cause the ice maker tray to overflow, while a valve stuck closed will result in no ice production at all. Low household water pressure or a kinked supply line can also stress the valve and contribute to erratic behavior that registers as a fault.

Diagnosis begins with a physical and electrical inspection of the water fill valve. Technicians should check for power delivery to the valve during an ice fill cycle and inspect the valve coil for continuity. If the valve is receiving proper voltage but not actuating, replacement is indicated. If the valve checks out electrically and mechanically, the fault may lie within the ice maker assembly itself, which would require ice maker replacement as the next step.

Source: manufacturer service documentation.

Common causes of 3-1-3

  1. 01

    Failed water valve solenoid coil

    Part replacement

    The solenoid coil inside the fill valve can burn out or go open-circuit over time, preventing the valve from opening or closing on command. This is the most common cause of a 3-1-3 fault and is confirmed by checking coil continuity.

  2. 02

    Valve stuck closed or obstructed

    Part replacement

    Mineral deposits or debris can mechanically jam the valve in the closed position, blocking water flow to the ice maker. The valve may pass an electrical check but still fail to allow water through.

  3. 03

    Wiring or connector fault at the valve

    Wiring / connection

    Damaged, corroded, or loose wiring harness connections between the control board and the water valve can interrupt the electrical signal and trigger this code. Inspect the connector pins and harness for corrosion or breaks.

  4. 04

    Insufficient household water pressure

    Wiring / connection

    If water pressure to the refrigerator is too low, the valve may not open fully or may chatter, which can register as a valve fault. Check the supply line shutoff valve and household pressure as part of the diagnosis.

  5. 05

    Faulty ice maker assembly

    Part replacement

    If the water valve tests as fully functional, the ice maker module itself may contain an internal fault that causes the control board to log the 3-1-3 code. In this case, ice maker replacement is the recommended repair.

See the test procedure for each cause

Frequently asked questions about 3-1-3

What does 3-1-3 mean on a Bosch refrigerator?
Error code 3-1-3 on a Bosch refrigerator indicates a fault with the water fill valve that supplies water to the ice maker. The control board has detected that the valve is not operating correctly, which can stop ice production entirely. The diagnostic process involves testing the valve electrically and mechanically, then replacing it or the ice maker if a fault is confirmed.
Can I fix error code 3-1-3 myself, or do I need a technician?
A knowledgeable DIYer can perform basic checks such as inspecting the water supply line, verifying the shutoff valve is fully open, and looking for obvious wiring damage. However, testing the solenoid valve for proper continuity and voltage requires a multimeter and some familiarity with appliance wiring. If the valve or ice maker needs replacement, the job is manageable for an experienced DIYer but a technician is recommended if you are not comfortable working with water supply connections and electrical components.
Is it safe to keep using my refrigerator while error code 3-1-3 is active?
The refrigerator's cooling and food preservation functions typically remain unaffected by a 3-1-3 fault, so stored food is not at immediate risk. However, if the water valve is stuck open, there is a risk of water overflowing the ice maker tray and leaking inside the freezer or onto the floor. It is best to address the fault promptly, and if you notice any signs of water leakage, shut off the water supply to the refrigerator until the repair is completed.
How much does it cost to repair a Bosch refrigerator showing error code 3-1-3?
Repair costs vary depending on which component needs replacement. A replacement water fill valve typically costs between $20 and $80 for the part alone, while a full ice maker assembly can range from $80 to $200 or more depending on the model. Adding professional labor, total repair costs generally fall between $100 and $350. Getting a diagnostic visit from a technician first will help confirm which part is at fault before purchasing anything.
Will resetting the refrigerator clear error code 3-1-3?
Resetting the refrigerator by unplugging it or cycling the power may temporarily clear the displayed code, but if the underlying fault with the water valve or ice maker has not been resolved, the code will return once the appliance runs an ice fill cycle again. A reset is useful for confirming whether the fault is intermittent, but it is not a substitute for proper diagnosis and repair of the faulty component.

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