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Error code reference

Bosch Refrigerator Error Code 2-1-1

Icemaker

Bosch codesBosch refrigerator codes

Icemaker: Sensor fault in ice maker.

First step from the service manual

Switch the appliance off and on; if fault code returns, replace the ice maker (sensor not replaceable).

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 2-1-1 means on a Bosch refrigerator

Error code 2-1-1 on a Bosch refrigerator indicates a sensor fault within the ice maker assembly. The ice maker contains an integrated temperature sensor that monitors conditions inside the ice-making unit to regulate the harvest cycle and water fill timing. When the control board cannot read a valid signal from this sensor, whether due to an open circuit, a short, or a signal that falls outside expected parameters, it triggers code 2-1-1 and flags the ice maker subsystem as non-functional.

The critical detail with this fault is that the temperature sensor inside the ice maker is not a separately serviceable component. It is integrated directly into the ice maker module itself. This means standard diagnostic steps like checking sensor resistance or swapping just the sensor are not applicable here. The entire ice maker assembly must be treated as a single unit for replacement purposes. A power cycle is the recommended first step to rule out a transient control board communication error, but if the fault code returns after the refrigerator is switched off and back on, the ice maker assembly requires replacement to resolve the issue.

Source: manufacturer service documentation.

Common causes of 2-1-1

  1. 01

    Failed integrated ice maker sensor

    Part replacement

    The temperature sensor inside the ice maker has failed internally, producing a signal the control board cannot read. Because the sensor is not separately replaceable, the entire ice maker assembly must be replaced.

  2. 02

    Transient control board communication error

    Wiring / connection

    A temporary glitch in communication between the ice maker and the main control board can trigger this code without a true component failure. Powering the refrigerator off and on is the first step to determine if the fault is persistent.

  3. 03

    Damaged or loose wiring harness connection

    Wiring / connection

    The wiring harness connecting the ice maker assembly to the control board may have a loose connector or damaged wires, causing an intermittent or absent sensor signal. Inspect the connector at the ice maker for corrosion or loose pins.

  4. 04

    Ice maker assembly damaged by frost or moisture

    Part replacement

    Excessive frost buildup or moisture intrusion into the ice maker compartment can cause electrical faults within the integrated sensor. Visible frost accumulation around the ice maker is a sign of this condition.

See the test procedure for each cause

Frequently asked questions about 2-1-1

What does 2-1-1 mean on a Bosch refrigerator?
Error code 2-1-1 on a Bosch refrigerator indicates a sensor fault in the ice maker assembly. The ice maker contains an integrated temperature sensor, and this code appears when the control board detects an invalid or absent signal from that sensor. Because the sensor is built into the ice maker unit, the entire assembly must be replaced if the fault persists after a power cycle.
Will resetting my Bosch refrigerator clear error code 2-1-1?
A power cycle, turning the refrigerator off and then back on, is the recommended first diagnostic step for code 2-1-1. If the error clears and does not return, no further action is needed. However, if the code comes back after the reset, the ice maker assembly has a confirmed hardware fault and will need to be replaced.
Can I fix error code 2-1-1 myself, or do I need a technician?
The initial power cycle step can be done by any homeowner. If the code returns, the repair requires replacing the ice maker assembly, which involves disconnecting electrical connectors and removing the unit from the freezer compartment. This is a manageable repair for a confident DIYer, but a technician can ensure the correct replacement part is sourced and properly installed.
Is it safe to keep using my refrigerator with error code 2-1-1 active?
Code 2-1-1 is specific to the ice maker subsystem and does not affect the main refrigerator or freezer cooling functions. Your food will remain safely refrigerated and frozen while this code is active. The primary consequence is that the ice maker will not produce ice until the fault is resolved.
How much does it cost to fix error code 2-1-1 on a Bosch refrigerator?
Since the sensor is not replaceable on its own, the repair involves replacing the full ice maker assembly. Parts costs for a Bosch ice maker assembly typically range from $150 to $350 depending on the specific model, with additional labor costs of $100 to $200 if a technician performs the repair. Total costs can vary based on part availability and your location.

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