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Error code reference

Bosch Refrigerator Error Code 3-4-4

Ice maker

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What the 3-4-4 error code actually means

Your Bosch refrigerator is displaying an error that means the ice maker has detected a problem inside itself that it cannot recover from on its own. Turning the refrigerator off and back on may clear the error if it was a one-time glitch. If the code comes back after restarting, the ice maker unit will need to be replaced to restore ice production.

Diagnostic procedure

The full 3-4-4 procedure

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1
First diagnostic step
Switch appliance off and on; if fault persists, replace ice maker.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of 3-4-4

Ranked by how often they cause this code
  1. 1Failed ice maker control module
  2. 2Seized or failed harvest motor
  3. 3Defective ice maker thermostat
  4. 4Transient electrical or software glitch
  5. 5Failed ice maker heating element

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Questions people ask about 3-4-4

What does 3-4-4 mean on a Bosch refrigerator?
Error code 3-4-4 on a Bosch refrigerator indicates an internal ice maker fault. This means the refrigerator's control system has detected a failure within the ice maker unit itself, such as a problem with the harvest motor, internal thermostat, heating element, or ice maker control module. The fault is specific to the ice maker assembly and does not affect other refrigerator functions. If a power cycle does not clear the code, the ice maker assembly typically needs to be replaced.
Is it safe to keep using my refrigerator while the 3-4-4 code is active?
Yes, the 3-4-4 fault is isolated to the ice maker system and does not affect the refrigerator's cooling or freezing performance. Your food will remain safely refrigerated and frozen while this code is present. The only loss of function is ice production. You can continue using the refrigerator normally while you arrange for diagnosis or parts.
How much does it cost to fix a 3-4-4 error code on a Bosch refrigerator?
If a power cycle does not resolve the fault, the primary repair involves replacing the ice maker assembly. Parts costs for a Bosch ice maker unit typically range from $80 to $250 depending on the specific model. If you hire a technician, labor charges will add to that cost, bringing the total repair estimate to a range of roughly $150 to $450. Getting a diagnosis from a qualified technician can confirm the fault before purchasing parts.
Will resetting my Bosch refrigerator clear the 3-4-4 error code?
A power cycle, turning the refrigerator fully off and then back on, is the recommended first step and may clear the code if the fault was caused by a temporary electrical glitch. However, if the 3-4-4 code reappears after the reset, the fault is persistent and indicates a hardware failure inside the ice maker. In that case, resetting alone will not resolve the problem and the ice maker unit will need to be replaced.
How do I fix the 3-4-4 error code on my Bosch refrigerator?
Start by turning the refrigerator off and back on to perform a power cycle. If the code clears and does not return, no further action is needed. If the 3-4-4 code persists after the power cycle, the ice maker assembly requires replacement. The internal components such as the harvest motor, thermostat, and control module are not typically serviceable individually, so the entire ice maker head is replaced as a unit.

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