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Error code reference

Bosch Refrigerator Error Code 5-5-1

Ice maker

Bosch codesBosch refrigerator codes

Ice maker: Internal ice maker fault.

First step from the service manual

Switch appliance off and on; if fault persists, replace ice maker.

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 5-5-1 means on a Bosch refrigerator

Error code 5-5-1 on a Bosch refrigerator indicates an internal ice maker fault. This code points to a failure within the ice maker module itself rather than an external component such as the water inlet valve or the freezer temperature sensor. The ice maker assembly contains several integrated components including a motor, thermostat, ejector blades, and a control board. When the refrigerator's main control system detects that the ice maker is not completing its harvest cycle correctly or is sending back an unexpected signal, it logs this fault code.

The most direct diagnostic approach recommended for this code is a power cycle: switching the appliance off, waiting a short period, and turning it back on. This resets the control electronics and can clear transient faults caused by brief voltage fluctuations or temporary signal errors. If the 5-5-1 code returns after the reset, the fault is persistent and points to a hardware failure within the ice maker unit itself.

Because this is classified as an internal ice maker fault, the failure is typically inside the sealed module assembly. Individual sub-components such as the ice maker motor or its onboard thermostat may have failed, but since these are generally not serviceable separately on Bosch units, the entire ice maker assembly is the recommended replacement. Continued operation with this fault will result in no ice production.

Source: manufacturer service documentation.

Common causes of 5-5-1

  1. 01

    Failed ice maker module

    Part replacement

    The internal control board or motor within the ice maker assembly has failed. This is the most likely cause when the error persists after a power cycle, and replacement of the full ice maker unit is required.

  2. 02

    Transient electrical fault

    Wiring / connection

    A temporary voltage spike or power interruption can cause the ice maker's onboard electronics to log a fault erroneously. A power cycle will typically resolve this if no hardware damage occurred.

  3. 03

    Ice maker thermostat failure

    Part replacement

    The ice maker contains an internal thermostat that monitors harvest cycle temperatures. If this thermostat fails or reads out of range, the assembly will report an internal fault.

  4. 04

    Ice maker motor seizure

    Part replacement

    The motor that drives the ejector blades can seize due to ice buildup or mechanical wear, causing the harvest cycle to stall and triggering the internal fault code.

See the test procedure for each cause

Frequently asked questions about 5-5-1

What does 5-5-1 mean on a Bosch refrigerator?
Error code 5-5-1 on a Bosch refrigerator indicates an internal ice maker fault. The refrigerator's control system has detected that the ice maker module is not functioning correctly. This fault is specific to the ice maker assembly itself rather than related water supply or temperature components. If the error persists after a power cycle, the ice maker unit will need to be replaced.
Can I fix the 5-5-1 error code myself?
The first step you can try yourself is switching the refrigerator off and back on to reset the electronics, which may clear the code if the fault was temporary. If the code returns, the repair requires replacing the ice maker assembly, which is a moderately involved task. A technician familiar with Bosch refrigerators should be able to complete the replacement, though a skilled DIYer comfortable with appliance repair can also do it.
Will resetting my Bosch refrigerator clear the 5-5-1 error?
A power cycle reset will clear the 5-5-1 code if the fault was caused by a temporary electrical glitch. However, if the ice maker has a genuine hardware failure, the code will return after the reset. A persistent 5-5-1 after reset confirms a hardware fault requiring ice maker replacement.
Is the 5-5-1 error code on a Bosch refrigerator a safety concern?
The 5-5-1 error code is not a safety hazard. It only affects ice production and does not impact the refrigerator's ability to cool or the freezer's ability to maintain safe food storage temperatures. You can continue using the refrigerator for food storage while arranging for the repair.
How much does it cost to fix a 5-5-1 error on a Bosch refrigerator?
If the ice maker assembly needs to be replaced, parts alone typically range from around $80 to $250 depending on the specific Bosch model. Adding professional labor costs, the total repair estimate generally falls in the range of $150 to $400. Costs can vary based on your location and the service provider.

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