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Error code reference

Bosch Refrigerator Error Code 1-2-1

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

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What the 1-2-1 error code actually means

Your Bosch refrigerator is showing an error because the icemaker got stuck during its cycle and could not finish making or releasing ice. This is often caused by a chunk of ice jamming the tray, but the icemaker motor or module could also be faulty. Until the problem is resolved, the icemaker will not produce ice.

Diagnostic procedure

The full 1-2-1 procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Start icemaker self test and observe if ice tray rotates; check for mechanical blockage.
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Most common causes of 1-2-1

Ranked by how often they cause this code
  1. 1Ice blockage jamming the tray
  2. 2Icemaker drive motor failure
  3. 3Faulty icemaker module
  4. 4Icemaker compartment temperature too warm
  5. 5Misaligned or damaged tray components

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Questions people ask about 1-2-1

What does 1-2-1 mean on a Bosch refrigerator?
Error code 1-2-1 means the icemaker ice production cycle was interrupted before it could complete. The refrigerator detected that the ice tray did not rotate through its full harvest sequence, which is required to release ice into the bin. The cause can be a mechanical blockage such as a jammed cube or frost buildup, or a component failure in the icemaker drive motor or module.
Is it safe to keep using my Bosch refrigerator when error 1-2-1 is showing?
Yes, error code 1-2-1 is specific to the icemaker and does not affect the refrigerator or freezer cooling functions. Your food will remain safely stored while this code is active. However, the icemaker will not produce ice until the fault is resolved, so you should plan for an alternative ice source in the meantime.
How much does it cost to repair a Bosch refrigerator showing error code 1-2-1?
If the fault is a simple ice blockage, clearing it yourself costs nothing beyond your time. If a component needs replacement, repair costs typically range from around $150 to $400 or more depending on whether the drive motor, icemaker module, or both need to be replaced, and whether you hire a professional technician. Labor rates and part costs vary by region and service provider.
How do I fix error code 1-2-1 on my Bosch refrigerator?
Start by running the icemaker self-test and watching whether the ice tray rotates. If you see ice jammed around the tray or evidence of frost buildup, power the unit off, allow the icemaker compartment to defrost, clear any obstructions, and restart. If the tray still does not move after clearing blockages, the drive motor or icemaker module likely needs to be replaced by a technician.
Will resetting my Bosch refrigerator clear error code 1-2-1?
A reset may temporarily clear the displayed code, but it will not fix the underlying problem. If the mechanical blockage or component fault is still present, the icemaker will attempt another cycle and the error will return. A lasting fix requires identifying and correcting the root cause before the code will stay cleared.

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