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Bosch · Dishwasher · E09

Meaning explained

An internal heat-pump heater fault was detected.

Diagnostic nodeE09MEANING
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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

Meaning explained for error E09

Bosch defines E09 for this dishwasher coverage as: An internal heat-pump heater fault was detected. The code is a diagnostic starting point, not proof that a particular component has failed.

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