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Error code reference

Bosch Refrigerator Error Code FILTER

The age of the water filter is close to the maximum lifetime; order a new filter (US version only).

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What the FILTER error code actually means

Your Bosch refrigerator is reminding you that the water filter inside is getting old and needs to be replaced soon. This is a routine maintenance reminder, not a malfunction, and your refrigerator is still working normally. Order a new compatible water filter cartridge, swap it in, and reset the indicator to clear the message.

Diagnostic procedure

The full FILTER procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
Confirm the fault
Power cycle the unit: switch off the breaker for 60 seconds, then restore power. If the code returns, the fault is persistent and the procedure below isolates the cause.
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 FILTER

Ranked by how often they cause this code
  1. 1Filter approaching six-month service interval
  2. 2Filter reset not performed after previous replacement
  3. 3High water usage accelerating filter depletion
  4. 4Filter installed without completing reset procedure

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Questions people ask about FILTER

What does FILTER mean on a Bosch refrigerator?
The FILTER indicator means the internal water filter cartridge is nearing the end of its recommended service life, which Bosch sets at approximately six months for US-market models. It is a maintenance reminder generated by the control board's internal timer, not a fault or malfunction. The refrigerator continues to operate normally when this message is displayed. You should order a replacement filter, install it, and reset the indicator using the control panel.
Is it safe to keep using my Bosch refrigerator when the FILTER alert is on?
Yes, the refrigerator itself is safe to use and will continue to dispense water and make ice normally when the FILTER indicator is active. However, an overdue filter cartridge may have reduced effectiveness at removing contaminants like chlorine, lead, and sediment from your water supply. For the best water quality, replace the filter as soon as practical after the indicator appears.
Will resetting the filter indicator clear the FILTER message without replacing the cartridge?
Performing a reset without replacing the filter will clear the FILTER message and restart the internal timer, but it does not address the actual condition of the cartridge. An old, saturated filter that is simply reset will continue to degrade in performance, potentially allowing more contaminants to pass through into your drinking water and ice. Resetting without replacement is not recommended as a long-term solution. The reset function is intended to be used only after a new filter has been installed.
How do I fix the FILTER alert on my Bosch refrigerator?
To resolve the FILTER alert, replace the water filter cartridge with a compatible replacement for your Bosch model. After installing the new filter, locate the filter reset button or option on the control panel and hold it for the required number of seconds until the indicator clears. The exact reset procedure varies by model, so consult the label inside the refrigerator or the user guide for your specific unit. Skipping the reset after replacement will cause the indicator to remain on.
How much does it cost to replace a Bosch refrigerator water filter?
Replacement water filter cartridges for Bosch refrigerators typically range from about $30 to $60 per cartridge, depending on the model and whether you purchase an original or compatible third-party option. Since Bosch recommends replacement every six months, budgeting for two filters per year is a reasonable expectation. Installation is a simple tool-free process that most homeowners can complete themselves, so there is generally no additional labor cost.

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