About this guide
- Written by ApplianceWorth Editorial Team
- Technical contact Victor — appliance technician
- Record updated 2026-07-01
- Applies to Bosch refrigerators
- Confidence medium
- Sources Manufacturer service documentation and field-repair experience · Methodology · Report a correction
The record-update date is a database timestamp, not proof of a fresh model-specific technical review. Check the applicability below and your manufacturer’s instructions before acting on a guide.
What this code means
The refrigerator is not receiving a valid signal from the water-tank temperature sensor on applicable ice-and-water dispenser models.
Most likely causes
- A failed water-tank temperature sensor
- A loose or damaged sensor connector
- A broken harness
- A dispenser-control input fault
Safe checks for the owner
- Confirm the water dispenser is not freezing or delivering unusually warm water.
- Power the refrigerator off for five minutes and retry once.
- Do not remove the water tank or internal wiring while the unit is powered.
Estimated U.S. repair cost
$220–$500, depending on model, access, parts availability and local labor.