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Bosch Dishwasher Error Code E15

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 10, 2026
⚠ High Severity 🔧🔧 Moderate DIY

Leak protection activated — water detected in base tray

The most common cause of the E15 error on a Bosch dishwasher is overfilled with water — door seal worn or torn (~30% of cases); start with: tilt the dishwasher to drain the base.

💰 DIY cost: $0–$100 👨‍🔧 Pro cost: $150–$380 Save $150+ by doing it yourself
Bosch Dishwasher error code E15 on the display panel
How the E15 code appears on a Bosch dishwasher display

What Does Error Code E15 Mean on a Bosch Dishwasher?

Leak protection activated — water detected in base tray.

E15 fires when a polystyrene float in the base tray rises against a microswitch, telling the control board that water has pooled beneath the tub. The board triggers AquaStop, running the drain pump continuously and locking the cycle until the tray is dry and the float drops. Unlike E24/E25, which point to blocked or restricted drainage through the pump and hose, E15 specifically indicates water has escaped the sealed circuit into the base — from a leak, overfill, or even heavy condensation.

Models affected: Virtually all Bosch dishwashers equipped with the AquaStop anti-flood system, including models such as SHEM63W55N, SHPM65Z55N, SHXM4AY55N, SHEM3AY55N, SHP878ZD5N, and SHX878ZD5N.
What owners report: Owners commonly report E15 appearing suddenly mid-cycle, sometimes with a running pump that won't stop. A frequent false trigger is steam or condensation after a hot cycle rather than an actual leak, so many find that simply tilting to drain and letting the base dry overnight clears it; if it returns quickly, suspect a real leak.

What Causes Error Code E15?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Overfilled with water — door seal worn or torn 30% of cases
  2. 2
    Sump or pump housing crack allowing water into base 25% of cases
  3. 3
    Condensation or steam accumulation triggering float sensor 20% of cases
  4. 4
    Internal hose connection loose or cracked 15% of cases
  5. 5
    Using too much detergent causing foam overflow 10% of cases

How to Fix Bosch Dishwasher Error Code E15

🔧🔧 Moderate DIY Est. time: 30–60 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Tilt the dishwasher to drain the base

    With power off at the breaker, carefully tilt the dishwasher forward about 45 degrees. Water will drain from the base pan. Place towels down. Let it sit tilted for 1–2 minutes.

    ⚠️ Turn off power at the breaker before tilting. The unit is heavy — get assistance.
  2. 2

    Allow the base to dry

    After draining, leave the dishwasher upright with the door open for several hours to allow any remaining moisture to evaporate from the base.

  3. 3

    Check the door seal

    Run your fingers along the full perimeter of the rubber door gasket. Look for cracks, tears, or sections that have pulled away from the channel. Replace if damaged.

    🔩 Bosch door gasket ($30–$70)
  4. 4

    Check for oversudsing

    If you used too much detergent, suds overflow into the base. Use only recommended dishwasher detergent — 1 tablespoon maximum.

  5. 5

    Inspect internal hose connections

    If the above don't apply, access the inside of the door panel and check the water inlet, circulation, and drain hoses for cracks or loose connections.

How to Reset Error Code E15

Tilt the unit to drain the base, allow it to dry completely, then restart. If the leak has been resolved, the float sensor will reset and the E15 code will clear.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full Bosch dishwasher reset guide → Enter diagnostic mode → Symptom guide: Dishwasher leaking →

Did this guide fix your appliance?

When to Call a Professional

If E15 recurs after drying and the door seal is intact, there is an internal water leak (cracked sump, hose, or pump) requiring professional inspection.

Average professional repair cost for this issue: $150–$380

Related Error Codes

E24
Drain blocked — dishwasher not draining
⚠ High Severity
E25
Drain pump or filter blocked — drain impeller obstructed
⚠ High Severity

Find Replacement Parts

Use these links to find the exact replacement parts for your Bosch Dishwasher:

🔩
Search PartSelect
Bosch Dishwasher repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More Bosch Dishwasher Error Codes

E01 Heating element or NTC sensor failure — water not heating E09 Heating circuit failure — heater not functioning E05 Water shortage — insufficient water entering dishwasher E22 Residual water in the sump — filter or impeller area blocked E04 Water flow sensor fault — fill volume not being measured

Frequently Asked Questions

Can I keep using my Bosch Dishwasher when error E15 appears? +
It is not advisable. The dishwasher may still power on, but running it while E15 is active can worsen the leak fault or damage related parts. Treat it as a soon-as-possible repair.
What most commonly causes E15 on a Bosch Dishwasher? +
Across reported Bosch dishwasher repairs, the most frequent is overfilled with water — door seal worn or torn (30% of cases), sump or pump housing crack allowing water into base (25%), then condensation or steam accumulation triggering float sensor (20%). Check them in that order before replacing any parts.
E15 keeps coming back after a reset — what should I check next? +
A reset only clears the stored E15 fault; if it returns, the leak problem is still present. Move on to the physical checks — tilt the dishwasher to drain the base, then allow the base to dry — since the code will reappear until the root cause is resolved. This is a moderate job — a multimeter and some disassembly are usually involved.
How much does it cost to fix Bosch Dishwasher error E15? +
A DIY repair typically runs $0–$100 in parts, versus $150–$380 for a professional service call, so handling it yourself saves around $150. Expect the work to take roughly 30–60 minutes.
Which Bosch Dishwasher models show error E15? +
E15 is documented on Virtually all Bosch dishwashers equipped with the AquaStop anti-flood system, including models such as SHEM63W55N, SHPM65Z55N, SHXM4AY55N, SHEM3AY55N, SHP878ZD5N, and SHX878ZD5N.. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: June 10, 2026.

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