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Error code reference

Bosch Refrigerator Error Code 1-3-1

Icemaker ice production cycle is interrupted (mechanical blockage or icemaker fault).

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Icemaker ice production cycle is interrupted (mechanical blockage or icemaker fault).

First step from the service manual

Start icemaker self test and observe if ice tray rotates; check for mechanical blockage.

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

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What 1-3-1 means on a Bosch refrigerator

Error code 1-3-1 on a Bosch refrigerator indicates that the icemaker ice production cycle has been interrupted. This code is generated when the icemaker control detects that the ice tray has failed to complete its rotation during the harvest cycle. The icemaker relies on a motorized tray or ejector mechanism to twist or rotate, releasing formed ice cubes into the storage bin. If that rotation is blocked or the drive motor fails to complete the cycle within the expected timeframe, the control board logs this fault and halts further ice production.

The two primary failure categories are mechanical blockage and icemaker module faults. Mechanical blockages are the most common trigger and occur when ice bridges form across the tray, a stray ice cube jams the ejector mechanism, or frost accumulation physically prevents the tray from rotating. Icemaker module faults involve the internal motor or control circuitry within the icemaker assembly itself failing to drive the tray through a full harvest cycle. The first diagnostic step is to initiate the icemaker self-test and observe whether the ice tray begins to rotate. If the tray does not move at all, the motor or module is suspect. If the tray starts but stalls, a mechanical obstruction is the more likely cause and the tray and ejector area should be carefully inspected for ice buildup or debris.

Source: manufacturer service documentation.

Common causes of 1-3-1

  1. 01

    Ice jam or blockage in the tray

    Wiring / connection

    Ice cubes or an ice bridge can freeze together and physically prevent the tray or ejector from rotating during the harvest cycle. Inspect the ice tray and surrounding area for clumped or fused ice and clear any obstruction manually.

  2. 02

    Frost accumulation around the icemaker

    Wiring / connection

    Excessive frost buildup around the icemaker assembly can block the tray rotation mechanism. A manual defrost of the icemaker compartment will often resolve this if frost is visibly present.

  3. 03

    Failed icemaker drive motor or module

    Part replacement

    The internal motor within the icemaker module drives the tray through its rotation cycle. If the motor has failed or the module circuitry is faulty, the tray will not move during the self-test and the entire icemaker assembly will require replacement.

  4. 04

    Icemaker module control fault

    Part replacement

    The icemaker control board or module can develop an internal fault that interrupts the production cycle even without a physical blockage. Running the self-test and observing incomplete or erratic tray movement points to this failure.

  5. 05

    Low freezer temperature or water supply issue

    Wiring / connection

    If the freezer is not maintaining adequate temperature, ice may not fully form and can stick in the tray, causing the rotation to stall mid-cycle. Verify the freezer compartment is holding the correct set temperature and that water supply to the icemaker is unobstructed.

See the test procedure for each cause

Frequently asked questions about 1-3-1

What does 1-3-1 mean on a Bosch refrigerator?
Error code 1-3-1 on a Bosch refrigerator means the icemaker ice production cycle was interrupted before completing. The control system detected that the ice tray failed to rotate fully during the harvest cycle, which is required to eject finished ice cubes. This can be caused by a physical blockage in the tray or a fault within the icemaker motor or module. The refrigerator stops ice production and logs the code to prevent damage to the mechanism.
How do I fix error code 1-3-1 on my Bosch refrigerator?
Start by running the icemaker self-test and watching whether the ice tray rotates. If it does not move, the icemaker module or drive motor likely needs replacement. If the tray stalls mid-rotation, check for ice jams, fused ice cubes, or frost buildup around the icemaker assembly and clear any obstructions. In many cases, manually removing ice blockages or performing a defrost cycle of the icemaker compartment will resolve the error without replacing any parts.
Is error code 1-3-1 on a Bosch refrigerator a safety concern?
Error code 1-3-1 is not a safety hazard. It is specific to the icemaker system and does not affect the refrigerator or freezer cooling functions. Your food will remain properly cooled and frozen while this code is active. The error simply means ice production has been halted until the underlying issue is resolved.
How much does it cost to repair a Bosch refrigerator with error code 1-3-1?
If the problem is a simple ice jam or frost buildup, there may be no parts cost at all, only the time to clear the blockage. If the icemaker module or drive motor needs replacement, parts alone typically range from around 60 to 200 dollars depending on the specific model, with professional labor adding another 100 to 250 dollars in most cases. Getting a diagnosis first will clarify whether a parts replacement is actually needed.
Will resetting my Bosch refrigerator clear error code 1-3-1?
A reset may temporarily clear the code, but it will return if the underlying cause is not addressed. If a mechanical blockage or ice jam triggered the fault, removing the obstruction first and then resetting the icemaker is the correct approach. If the icemaker motor or module has failed, the code will continue to reappear after each reset until the faulty component is replaced.

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