Bosch Washer Leaking: AquaStop Protection and Door Boot Seal Fix
Quick Answer
Bosch washer leaking: place paper towels around the machine and run a cycle to find where the water is coming from. Front = door seal or dispenser. Rear = hose connection or valve. Bottom = pump or tub seal. Identifying the location narrows the repair to one or two parts.
Bosch washers have AquaStop - a double-walled inlet hose with electronic shut-off that stops water flow if a leak is detected anywhere in the system. Bosch AquaStop is more advanced than Frigidaire's version: it includes a sensor in the inlet hose itself (not just the base pan). If the AquaStop indicator on the inlet hose shows red (visible through a small window), the hose has detected a leak and shut off water. This can sometimes trigger falsely from condensation in cold laundry rooms. To reset: unplug the washer, disconnect the inlet hose, drain any water from the hose, reconnect, and plug in. Bosch door boot seals use a higher-grade silicone than consumer brands and last longer, but they can still collect debris in the fold. The Bosch-specific leak: the detergent dispenser tray has a siphon mechanism that can clog with dried detergent, causing water to overflow from the dispenser during fill.
What Does the LEAKING Code Mean?
Bosch leaking: AquaStop on inlet hose (red indicator = leak detected, may be false from condensation).
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Symptoms You May Notice
- Appliance leaking
- Performance issue
- May show error code
Can you reset a Bosch washer to clear the LEAKING code?
Unplug 60 seconds. Plug in and test.
Tools Required for Diagnosis
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
Check the most common cause described in the guide above.
Check the most common cause described in the guide above.
Check secondary causes and error codes if displayed.
If basic checks fail, consult a professional or run manufacturer
Replacement Parts
If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.
| Part Name | OEM Number | Estimated Price |
|---|---|---|
| Bosch AquaStop Inlet HoseModel-specific · $40–$70 | Model-specific | $40 – $70 |
Repair vs. Replace Calculator
Frequently Asked Questions
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Same Fix Works on These Brands
Bosch shares the same hardware platform with these brands. The diagnosis and repair steps are identical.
Models Known to Experience LEAKING Errors
This repair applies to most Bosch washers with this error code. Common model numbers include:
WAW285H2UC, WAT28402UC
Last verified for technical accuracy on March 15, 2026