Bosch · Dishwasher Moderate

E05 — Overfill / float switch tripped

Per Bosch's official US error-code page, E05 means there is a wash arm diverter circuit fault/error at the main control board.

Keep using it?
Yes, with caution
DIY difficulty
Easy
Typical cost
$35-75
Verified against
bosch-home.com ↗

The fix

Water inlet valve (stuck open)

Overfill - too much water in tub

$35-75 moderate difficulty 45 min Tools: screwdriver, adjustable wrench, towel

Diagnose first: Inlet valve diaphragm worn and not closing fully; pressure switch can also misread level.

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Didn't resolve it? Next suspect: Pressure / float switch ($25-50)

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How to fix it

  1. Power off the dishwasher at the breaker.
  2. Tilt the unit forward gently and let any water in the base pan drain into a towel.
  3. Inspect the base pan for the source of the leak.
  4. Check the foam float in the base for free movement.
  5. Test the inlet valve by listening for it to close at end of fill; replace if stuck.
  6. Restore power and run a Rinse cycle to verify.

Why it happens

Typical signs: Drain pump runs continuously · Cycle will not start · Water visible in base pan

  • Leak inside the dishwasher Door seal, hose clamp, or sump leaking into the base pan.
  • Inlet valve stuck open Solenoid fails to close, overfilling the tub.
  • Float switch stuck up Debris under the foam float in the base.
  • Drain restriction Slow drain causing back-up that triggers the float.

More Bosch dishwasher codes

E01 E01 — Control board fault E02 E02 — Heating element / NTC sensor fault E03 E03 — Water not heating E04 E04 — Water flow / flow meter fault E06 E06 — Door-Closure or Aqua (Turbidity) Sensor Fault E07 E07 — Drying fan fault

All Bosch codes → All dishwasher codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: bosch-home.com.