Bosch Refrigerator Error Code 1-1-2
Ice maker
Ice maker: Ice production cycle is interrupted (ice tray rotation failure).
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.
Get the full diagnostic procedure for 1-1-2.
- Step-by-step tests with expected resistance, voltage, and continuity values
- Wiring diagram references and connector pinouts from the OEM service manual
- Verified part numbers when replacement is required
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What 1-1-2 means on a Bosch refrigerator
Error code 1-1-2 on a Bosch refrigerator indicates a fault within the ice maker module, specifically that the ice production cycle has been interrupted due to a failure of the ice tray rotation mechanism. The ice maker relies on a motor-driven tray that rotates to eject finished ice cubes into the storage bin. When the control system detects that the tray has not completed its rotation within the expected timeframe, it logs this code and halts the ice-making cycle to prevent damage to the mechanism.
The most common cause of this fault is a mechanical obstruction preventing the tray from rotating freely. Ice bridging, a clump of ice that spans across multiple cubes and freezes to the tray walls, is a frequent culprit. The drive motor or the gear assembly connecting the motor to the tray can also fail, leaving the tray stationary even when the motor receives a signal to rotate. In some cases, the tray itself may be warped or cracked, creating friction points that prevent full rotation.
Diagnosing this code begins with running the ice maker self-test cycle, which commands the tray to rotate through a full ejection sequence. During the test, observe whether the tray moves at all, moves partially, or remains completely stationary. This distinction helps narrow the cause to either a mechanical blockage, a motor fault, or a control board issue. Clearing any ice buildup and resetting the module may resolve the code if the root cause was a temporary obstruction.
Source: manufacturer service documentation.
Common causes of 1-1-2
- 01
Ice blockage or bridging in the tray
Wiring / connectionIce can fuse together or freeze to the tray walls, physically preventing rotation. Inspect the tray for clumped or stuck ice and clear any buildup manually after unplugging the refrigerator.
- 02
Ice maker drive motor failure
Part replacementThe motor responsible for rotating the ice tray may have burned out or seized. During the self-test, a completely stationary tray despite power being present points to motor failure.
- 03
Worn or stripped gear assembly
Part replacementThe gear train connecting the drive motor to the tray can strip over time, causing the motor to spin without actually turning the tray. This often produces an audible grinding or clicking sound during the cycle.
- 04
Warped or damaged ice tray
Part replacementA cracked or deformed tray creates friction or catches on the housing during rotation. Visually inspect the tray for cracks, warping, or any point where it contacts the ice maker frame.
- 05
Ice maker control module fault
Part replacementIf the tray, motor, and gears all appear intact and unobstructed, the control module that signals the rotation cycle may be sending incorrect commands or failing to read rotation feedback. This is the least common cause and is typically diagnosed after all mechanical components are ruled out.
Frequently asked questions about 1-1-2
What does 1-1-2 mean on a Bosch refrigerator?
How do I fix error code 1-1-2 on my Bosch refrigerator?
Will resetting the ice maker clear the 1-1-2 error code?
Is error code 1-1-2 on a Bosch refrigerator a safety concern?
How much does it cost to repair a Bosch refrigerator showing error code 1-1-2?
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