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Error code reference

Bosch Refrigerator Error Code Eg

Water supply error

Bosch codesBosch refrigerator codes

Water supply error — I-sensor temperature does not go up 5 minutes after water supply.

First step from the service manual

Check the I-sensor or water supply line.

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

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What Eg means on a Bosch refrigerator

The Eg error code on a Bosch refrigerator indicates a water supply error tied to the I-sensor, which is a temperature sensor that monitors conditions during or after a water supply cycle. Specifically, the control board expects the I-sensor to register a temperature rise within 5 minutes of initiating a water supply event. If the sensor reading does not increase within that window, the system interprets this as a failure in the water delivery process and triggers the Eg code. This points to either a problem with the water physically reaching the intended area or a fault in the sensor itself.

The I-sensor functions as a confirmation mechanism, verifying that water has been delivered and that the expected thermal change has occurred. If water flow is blocked, restricted, or interrupted entirely, the heat exchange or temperature shift that the sensor is designed to detect will never happen, and the timer will expire without a valid reading. Common water supply issues include a kinked or frozen supply line, a closed or partially closed water shutoff valve, a clogged inlet filter screen, or a failed water inlet valve that is not opening under electrical command.

Alternatively, the I-sensor itself may be faulty, producing a static or inaccurate reading even when water is being supplied normally. Diagnosing this requires checking the water supply line for flow and pressure first, then inspecting the sensor for proper connection and correct resistance output. Both components should be evaluated before replacing any parts to avoid unnecessary costs.

Source: manufacturer service documentation.

Common causes of Eg

  1. 01

    Blocked or closed water supply line

    Wiring / connection

    If the shutoff valve behind the refrigerator is partially or fully closed, or if the supply line is kinked or frozen, water will not reach the appliance. Inspect the line and valve visually and confirm water flows freely.

  2. 02

    Failed water inlet valve

    Part replacement

    The water inlet valve controls the flow of water into the refrigerator and requires both adequate water pressure and a functioning solenoid to open. If the solenoid coil is burned out or the valve is mechanically stuck, no water will pass through even with the supply line fully open.

  3. 03

    Faulty I-sensor

    Part replacement

    The I-sensor may be producing a fixed or inaccurate reading that does not reflect the actual temperature change during a water supply cycle. Check the sensor's electrical connection and resistance output to determine if it needs replacement.

  4. 04

    Clogged inlet filter screen

    Wiring / connection

    A fine mesh screen at the water inlet valve connection can accumulate mineral deposits over time, restricting flow enough to prevent a sufficient water supply event. Removing and cleaning or replacing the screen can restore normal flow.

  5. 05

    Low household water pressure

    Wiring / connection

    Bosch refrigerators require a minimum water pressure to operate the inlet valve correctly. If household pressure is too low, the valve may not open fully, resulting in insufficient water delivery and triggering the Eg error.

See the test procedure for each cause

Frequently asked questions about Eg

What does Eg mean on a Bosch refrigerator?
The Eg code on a Bosch refrigerator signals a water supply error. It means the refrigerator's I-sensor did not detect a temperature increase within 5 minutes of a water supply cycle starting. This tells the control board that water either did not arrive as expected or the sensor could not confirm the delivery. The two primary areas to investigate are the water supply line and the I-sensor itself.
How do I fix the Eg error on my Bosch refrigerator?
Start by checking that the water shutoff valve is fully open and that the supply line has no kinks, blockages, or frozen sections. Inspect the inlet filter screen for mineral buildup and clean it if needed. If water flow appears normal, the next step is to check the I-sensor for a secure connection and correct operation. If the inlet valve or I-sensor is confirmed faulty, those components will need to be replaced.
Will resetting my Bosch refrigerator clear the Eg error code?
A reset may temporarily clear the Eg code from the display, but the error will return if the underlying problem is not resolved. The refrigerator will attempt another water supply cycle and trigger the code again if the I-sensor still does not detect the expected temperature rise. A reset is useful for confirming a repair worked, but it should not be relied on as a fix.
Is the Eg error on a Bosch refrigerator a safety concern?
The Eg error is not a safety hazard in the immediate sense, but it does indicate the water supply system is not functioning correctly. This can affect features like ice making or water dispensing. Left unaddressed, the root cause, such as a frozen supply line, could potentially worsen over time. It is best to diagnose and resolve the issue promptly to avoid further complications.
How much does it cost to repair the Eg error on a Bosch refrigerator?
Repair costs vary depending on the cause. If the issue is simply a closed valve or a kinked line, there may be no parts cost involved. Replacing a water inlet valve typically costs between $40 and $120 for the part, while an I-sensor replacement is generally in the $20 to $80 range. Adding professional labor, total repair costs can range from $100 to $300 or more depending on your location and service provider.

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