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Bosch · Dishwasher · E09

First safe step

An internal heat-pump heater fault was detected.

Diagnostic nodeE09FIRST-STEP
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Use this as a diagnostic branchConfirm the exact model manual before ordering parts or opening the appliance.

Coverage: Bosch dishwasher families that use E09/E:09.

GUIDANCE

First safe step for error E09

The first safe action is to confirm the exact code and model, then begin with: Turn off the dishwasher..

Safe sequence

  1. 1Turn off the dishwasher.
  2. 2Reset power at the breaker for 30 seconds.
  3. 3If E09 returns, stop use and contact Bosch support.

Stop and get qualified help when

  • The code returns after reset
  • There is overheating, odor or breaker tripping
Primary sourceBosch — dishwasher error codes ↗Verified 2026-07-17 · manufacturer