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Bosch · Dishwasher · E09

If the code returns

An internal heat-pump heater fault was detected.

Diagnostic nodeE09RECURRING-CODE
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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

If the code returns for error E09

If E09 returns after an accessible check, do not keep resetting the appliance. Record when it appears, stop at any unsafe condition, and use the model-specific service path.

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