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Bosch · Dishwasher · E09

Before requesting service

An internal heat-pump heater fault was detected.

Diagnostic nodeE09BEFORE-SERVICE
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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

Before requesting service for error E09

Before requesting service, record the model number, code, cycle stage and visible symptoms. Complete only these safe checks: Turn off the dishwasher.; Reset power at the breaker for 30 seconds.; If E09 returns, stop use and contact Bosch support..

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