Bosch Dishwasher: leak detected

Professional Repair Guide

What is this symptom?

Experiencing a leak from your Bosch dishwasher? This issue may manifest as puddles around the door or water pooling beneath the unit. If you see water dripping from hoses or if the internal leak detection system activates (e.g., E15 error), it’s crucial to address the problem promptly to prevent further damage.

Urgency: Medium

Important Tips for Bosch Models

Bosch dishwashers include an AquaStop/float switch system that triggers error codes (e.g., E15) when water accumulates in the base pan indicating an internal leak. (Appliance Parts Pros)2

Possible Causes

Worn or damaged door seal/gasket

How to Identify: Water around the front bottom of the door; visible cracks, tears, or flattened sections in the gasket; dollar bill test slips out easily. (Appliance Parts Pros1turn

Part: Door gasket / seal

Loose or damaged internal hoses / hose connections

How to Identify: Water pooling under unit; inspect hoses beneath lower access panel for cracks, looseness, or missing clamps.

Part: Drain hose, recirculation hose, inlet hose

Damaged spray arm directing water incorrectly

How to Identify: Water sprays toward door seal or uneven flow; visible cracks or obstruction in spray arms.

Part: Spray arm assembly

DIY Solutions

Inspect and Replace Door Gasket

Moderate 30-60 minutes

Tools Needed: screwdriver, replacement gasket

Turn off power and water supply to the dishwasher.
Open the dishwasher door and visually inspect the gasket for damage.
If worn, remove old gasket and press the new gasket into the channel evenly.
Close door and run a test cycle to confirm leak is resolved.

⚠️ Safety First: Ensure unit is unplugged to avoid electrical hazards.

Check and Tighten Hose Connections

Moderate 30-45 minutes

Tools Needed: screwdriver, adjustable wrench

Disconnect power and access lower kickplate.
Inspect drain and recirculation hoses for cracks and ensure clamps are tight.
Replace hoses if damaged.
Reconnect and test with a short cycle.

⚠️ Safety First: Turn off water supply before disconnecting hoses.

Reduce Excessive Sudsing

Easy 5 minutes

Ensure only Bosch-approved low-sudsing dishwasher detergent is used.
Reduce the amount of detergent if oversudsing is observed.

Next step

Choose the next step for leak detected

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Based on diagnostic data

Most relevant component to inspect

Door Gasket

Creates a watertight seal around the door to prevent leaks during operation.

Typical part-only price: $45 - $110
DIY difficulty: Medium
Estimated time: 30-60 mins

Optional: enter your model number

Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

Check related components first; use model search as a fallback.

Possible related component

Drain Hose

Carries waste water from the drain pump to your home's standpipe or sink drain.

$15 - $30 · Easy · 15-30 mins

Check fit & price

Possible related component

Spray Arm

Rotates and sprays high-pressure water to clean dishes inside the tub.

$20 - $55 · Easy · 5-10 mins

Check fit & price

Model number required

Model-compatible Dishwasher parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.

Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Dishwasher Cleaner and Descaler

Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.

View maintenance supply

Maintenance supply

Braided Dishwasher Inlet Hose

For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.

View maintenance supply

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Professional Repairs

Replace Water Inlet Valve

Estimated Cost: $60 - $150

Internal Pump/Sump Seal Replacement

Estimated Cost: $120 - $300

Spray Arm Replacement

Estimated Cost: $20 - $80

When to Call a Professional

Leak persists after DIY checks of seals, hoses, and detergent usage.

Water appears under the dishwasher’s base or triggers Bosch E15 error consistently.

Internal components like pumps, inlet valves, or spray arms need replacement.

Preventive Maintenance

Regularly clean door seals and filter: Leaks due to debris buildup and worn seals
Frequency: monthly
Inspect hoses and clamps: Leaks from loose or cracked hoses
Frequency: annually

Frequently Asked Questions

Why is my Bosch Dishwasher leak detected?

Common causes include a worn door seal, loose hoses, or a damaged spray arm.

How do I fix Bosch Dishwasher leak detected myself?

Inspect and replace the door gasket or check hose connections for tightness.

How much does it cost to fix leak detected?

Professional repairs range from $60 for the water inlet valve to $300 for pump seal replacement.

When should I call a technician for leak detected?

If leaks persist after DIY fixes, or if you're uncomfortable with repairs, it's time to call a pro.

References & Sources

Bosch Dishwasher Leaking Support Official

Community Analytical Insights

Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions

Common Issues Reported by Users

E15 error code (3 mentions)

User Suggested Solutions

Check for leaks in the water valve and inspect the base plate
Use a sump repair kit for sump leak
Remove kickplates and dry the area with a dehumidifier and fan

Limited-source guidance; percentages and success-rate claims are not shown
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

Community Discussions

E15 error code, pump running periodically

Removed kickplates and dried the area with a dehumidifier and fan; dishwasher works fine now.

DIY View on Reddit →

E15 error, slow leak

Repair kit available for sump leak; requires torx 20 bit and box cutter.